Answer:
to increase calcium by mobilizing the iron from bone
Explanation:
It does this by stimulating release of calcium from bones and increasing its reabsorption from the kidneys. This helps to maintain calcium homeostasis and is crucial for normal bone metabolism.#spj4
2 Explain how Pasteur made sure that any micro-organisms that appeared in the
flask had food and oxygen.
In order to determine whether sterile nutritive broth could spontaneously produce microbial life, Louis Pasteur developed a technique. He put up two experiments to do this. In each, Pasteur filled flasks with nutritious broth, shaped the flasks' necks into a S shape, and then heated the broth to destroy micro-organisms any that could have been there.
What study identified the micro-organisms in the flask that was left open?It is generally accepted that Louis Pasteur's 1859 experiment provided the definitive answer. In a nutshell, Pasteur used a flask with a long neck that curled downward, resembling a goose, to boil a beef broth.
What action did Pasteur take to allow bacteria to enter the flask?In a nutshell, Pasteur used a flask with a long neck that curled downward, resembling a goose, to boil a beef broth. The concept behind the neck's bend was to maintain open airflow while preventing falling debris from entering the soup. For a long time, there was no growth in the flask.
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Match these items.
1. smallest unit of classification
A. plant characteristics
2. segmented digestive system, B. appendages
C. taxonomy
3. largest phylum of animals
D. animal characteristics
4. green, conductive tissue, seeds, flowers
E. species
5. classification
F. Arthropoda
6. groups
of families
G. order
7. largest division of plants
H. Tracheophyta
1) E. species, 2) B. appendages, 3) F. Arthropoda, 4) A. plant characteristics, 5) C. taxonomy, 6) G. order, 7) H. Tracheophyta.
What is meant by Arthropoda ?Arthropoda is the largest phylum of animals, consisting of over 1 million known species.The name "Arthropoda" comes from the Greek words "arthro" meaning jointed and "poda" meaning feet.Arthropods have a segmented body, jointed appendages, and an exoskeleton made of chitin.They are found in nearly every habitat on Earth, from the ocean depths to the highest mountains.The phylum includes insects, arachnids, crustaceans, and myriapods.Arthropods play important roles in many ecosystems, serving as pollinators, decomposes, and food sources for other animals.Some of the most well-known arthropods include bees, ants, spiders, lobsters, and ladybugs.They have evolved unique adaptations like camouflage, mimicry and venom to survive in their environments.Arthropoda is the most diverse phylum on earth, it has a wide range of species that include the smallest and the largest known living creatures such as the fairyfly and the blue whale lice.To learn more about Arthropoda refer:
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FORESTRY ANSWER ASAP
Question 11 (1 point)
Which of the following is a purpose of professional organizations?
Spreading knowledge in the field
Making a lot of money by charging annual dues
Preventing inexperienced people from entering the field
Telling individual business owners how they must run their businesses
Question 12 (1 point)
The purpose of the organization Greenpeace is to
regulate forests.
monitor all environmental issues.
make work difficult for those in forestry.
prevent destruction of aquatic ecosystems.
Question 13 (1 point)
Genetically modified eucalyptus trees have which of the following advantages?
They cost significantly less to plant
They require very little water to thrive
They are immune to many common fungi
They can withstand colder temperatures
Question 14 (1 point)
Which of the following are all foresters in the United States required to follow?
Policy set by a city
Federal regulations
Directives from the United Nations
Input from environmental organizations
Question 15 (1 point)
In any situation, which of the following should be a forestry professional's first priority?
Using new technology
The interest of business
The well-being of the forest
Making stakeholders happy
Answer: 1- Telling individual business owners how they must run their businesses
2- regulate forests. 3-
They are immune to many common fungi
Explanation:
Which statement describes the relative age of a fossil that has formed inside a layer of rock? (1 point)
1. The fossil is younger than the layer of rock right above it.
2. The fossil is younger than the layer of rock it was formed in.
3. O The fossil is older than the layer of rock it was formed in
4. The fossil is older than the layer of rock right below it
The fossil that is older than the layer of rock it was produced in is the relative age of a fossil that has developed inside a layer of rock.
What is a layer of rock?The fossil that is older than the layer of rock it was produced in is the relative age of a fossil that has developed inside a layer of rock. To determine whether a rock layer or the fossils it contains are older or younger than another, relative age dating is utilised. Because they show the relative ages of the rock layers in which they are found, index fossils are useful because of this.
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6. If all humans have to same 4 bases (adenine, guanine, cytosine, thymine), what accounts for differences
between individual humans?
Answer:
The bases are arranged in different patterns for different people which is what makes them unique
6. A sequence of DNA is shown below. Determine the complimentary strand.
7. Can you predict which base comes next in the strand of DNA above? Why or why not?
The complimentary stand sequence would be TGA TAC G.
No, the next base that comes cannot be predicted because there are no theories of laws that can be used for prediction.
DNA sequenceThe complementary sequence of a DNA strand follows the base pairing rule that says that A always pairs with T and G always pairs with C.
Thus, for the DNA strand ACT ATG C, the complementary base sequence would be TGA TAC G.
It is not possible to predict the next base for a single strand DNA sequence because there are no guiding theories or principle. This is unlike the base pairing rule of Chargoff that guides the prediction of base sequence for complementary strands or transcription products of DNAs.
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ASAP I can’t find the textbook answer
The formation of ATP and NADPH in the light-dependent reaction and the formation of glucose in the light-independent reaction all show the photosynthesis process as it is completed in two phases.
What is the main reason for photosynthesis?The main idea of photosynthesis is that it provides oxygen and glucose to the living animals for the life forms to exist, and in the light-dependent process at the end, the ATP and NADPH are formed by the movement of electrons whereas factors like temperature, pH, and carbon dioxide concentration determine the photosynthesis rate.
Hence, the formation of ATP and NADPH in the light-dependent reaction and the formation of glucose in the light-independent reaction all show the photosynthesis process as it is completed in two phases.
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Which of the following is an
example of a K-selective species?
A. moths
B. grizzly bears
C. cockroaches
1.In this environment, which trait is adaptive for the birds
2. Did the birds choose to have the adaptive trait? (yes or no)
3.Sherman suggests that reproduction always creates individuals with adaptive traits. Does this seem correct? Why or why not?
In this environment, it's not specified what the adaptive trait for the birds is. Adaptive traits vary depending on the environment and the species. Some examples of adaptive traits in birds could include: a strong beak for cracking open seeds, good eyesight for spotting predators or prey, or the ability to fly long distances for migration.
No, birds do not choose to have adaptive traits.Sherman's statement that reproduction always creates individuals with adaptive traits is not entirely correct.What is the reproduction about?Adaptive traits are the result of natural selection, which is a process where certain traits become more common in a population over time because they give individuals an advantage in survival and reproduction. These traits are passed on to the next generation, and over time, the population becomes better adapted to its environment.
Reproduction creates genetic variation which leads to the possibility of having adaptive traits, but not all the individuals will have adaptive traits. Adaptive traits are the result of natural selection, as previously mentioned.
Therefore, Some individuals may possess traits that give them an advantage in survival and reproduction, while others may have traits that put them at a disadvantage. Over time, the population will become more adapted to its environment, but not all the individuals will have adaptive traits.
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The functions of body parts are studied in the area of medical science called _______, while the structures are explored in the area called _______.
Answer:
Answer 1: Systemic Anatomical
Answer 2: Anatomy
Explanation:
For example, a systemic anatomical study of the muscular system would consider all of the skeletal muscles of the body. Whereas anatomy is about structure, physiology is about function.
The functions of body parts are studied in the area of medical science called physiology, while the structures are explored in the area called anatomy.
Understanding the specific operation of the many organs, tissues and systems of the body is a main goal of physiology. This includes researching bodily functions such as hormone regulation, respiration, digestion, and metabolism. Physiologists study the interactions between different body parts and how they adjust to different environments.
The study of the structure and arrangement of body parts is the subject of anatomy. It involves assessing the dimensions, location, and connections between tissues, organs, and cells of the body. To examine the complex structure of the body and its organs, anatomists use methods such as dissection, imaging, and microscopic analysis.
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abundance of chinook salmon in the orca population territory, displayed as an abundance index. a higher abundance index indicates a higher abundance of chinook salmon.which of the following statements is best supported by the data provided above?
Chinook salmon 40 inches or more used to be abundant, especially in the Columbia River or the Alaskan Kenai Peninsula and Copper River basins.
The productivity of Chinook salmon populations may be negatively impacted by the average body size losses, which are between 25% and 30% in overall weight and roughly 10% in length.Our Southern Resident orca population's sustainability depends on the availability of fish, particularly Chinook salmon. catching a fish in L84. Picture taken by Dave Ellifrit of CWR.Chinook salmon move to the ocean where they spend the majority of their lives feeding and growing after being born in freshwater rivers and streams. The lifestyle of each population in the ocean differs, primarily dependent on what stream they were born in and where they were born.
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Eye Color is controlled via a polygenic interaction between two genes. They will be represented by gene “a” and gene “b”. The chart below shows how the genes interact with one another to code for a phenotype.
Polygenic Inheritance – Eye Color
Key:
AABB = Black
A-B- = Brown
A-bb = Hazel
aaB- = Green
aabb = blue
If a man with brown eyes(AaBb) mates with a female with green eyes(aaBb), what would be the chance of the following outcomes
Polygenic inheritance refers to traits that are coded by the interaction of several genes. The expected phenotypes in the exposed example are: 6/16 individuals are expected to have Brown eyes (A-B-). 2/16 are expected to have Hazel eyes (A-bb). 6/16 are expected to have Green eyes (aaB-). 2/16 Blue eyes (aabb).
What is polygenic inheritance?
Polygenic inheritance is a non-mendelian inheritance pattern that occurs when a trait results from the interaction of more than one gene.
The interaction between many genes and alleles can cause different combinations that result in phenotypic gradation. This gradation depends on the level of contribution of each allele.
In the exposed example, two diallelic genes are involved in eye color,
Gene A ⇒ Alleles A and aGene B ⇒ Alleles B and bThe interaction between these genes results in the following phenotypic categories,
AABB ⇒ Black A-B- ⇒ Brown A-bb ⇒ Hazel aaB- ⇒ Green aabb ⇒ blueCross)
Parentals) AaBb x aaBb
Gametes) AB, Ab, aB, ab aB, aB, ab, ab
Punnett square)
AB Ab aB ab
aB AaBB AaBb aaBB aaBb
aB AaBB AaBb aaBB aaBb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
F1)
6/16 individuals are expected to have Brown eyes, A-B-2/16 individuals are expected to have Hazel eyes, A-bb6/16 individuals are expected to have Green eyes, aaB-2/16 individuals are expected to have Blue eyes, aabbYou can learn more about polygenic inheritance at
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Since Brucella species are facultative intracellular organisms that infect the reticuloendothelial system, specimens of choice for recovery include:
Answer:
Specimens of choice for recovery of Brucella species include blood, bone marrow, and joint fluid.
Explanation:
Which body form is this organism?
-Ascon
-Sycon
-Leucon
Explain
Answer:
Sycon
Explanation:
mainly due to its inside shape and the other things around inside it would be a ascon if it had none of that
it would look way more dysfunctional and complex if it was leucon
20 POINTS FOR ANSWER
Which of the following are NOT additional benefits that hydroelectric dams may provide?
Flood control
Irrigation
Fresh water supply
All of these are benefits
All of the above options are additional benefits that hydroelectric dams can provide (option D).
What is hydroelectric dam?Hydroelectric dam is a conventional dam that holds water in a man-made lake, or reservoir, behind it. When water is released through the dam, it spins a turbine connected to a generator that produces electricity.
A dam is generally a structure used to stop or deviate the incoming flow of a lotic water body.
Therefore, it can be said that a hydroelectric dam provides the following additional benefits:
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R. C. Punnett conducted experiments on the inheritance of traits in the sweet pea, Lathyrus odoratus. In one experiment, he crossed two different true-breeding sweet pea plant strains, one with erect petals and long pollen, and the other with hooded petals and round pollen. All the offspring (F1F1 generation) had erect petals and long pollen (Figure 1).
Figure 1. Sweet pea plant cross
Next, Punnett allowed the F1F1 generation to self-fertilize and recorded the phenotypes of their offspring. The data are shown in Table 1.
Table 1. F2F2 results of F1F1 self-fertilization cross
How many degrees of freedom should be used when looking up the critical value for a chi-square analysis of the ratios of phenotypes observed among the F2F2 offspring versus the expected phenotypic ratio assuming independent assortment?
2A
3B
4C
5
The degree of freedom used when looking up the critical value for a chi- square analysis is 3 . The correct option to this question is B.
Seven chromosomal cells are produced as a result of meiosis I and II. Homologous chromosomes split apart in meiosis I. Sister chromatids split apart during meiosis II. 14 chromosomes are produced in the progeny of two cells that unite during fertilization.
Homologous chromosomes, which are sets of chromosomes with genes for the same qualities, split from one another during meiosis I. A zygote, which is created when an egg and sperm join to form a single cell, has 14 chromosomes because of the union of two cells, each of which has 7 of them, during the process of fertilization. Combining the 7 chromosomes contributed by the sperm and the 7 chromosomes provided by the egg, there are 14 chromosomes total. By following this procedure, the child is guaranteed to inherit both parents' whole genetic repertoire.
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Now let us specifically look at how energy from the sun is turned into a form of energy we can use (ATP), when oxygen is present:
Start with writing the balanced chemical equation for photosynthesis. Below the equation please write, in English, what the numbers and letters in the equation mean:
Next, writing the balanced chemical equation for Aerobic Cellular Respiration. Below the equation please write, in English, what the numbers and letters in the equation mean:
The numbers and letters represent the molecules of carbon dioxide and water in photosynthesis and glucose molecules, carbon dioxide, water and oxygen in aerobic cellular respiration.
What is the outline of photosynthesis and aerobic cellular respiration?Photosynthesis:
6CO2 + 6H2O + light energy → C6H12O6 + 6O2
-6CO2 represents the six molecules of carbon dioxide
-6H2O represents the six molecules of water
light energy represents the energy from the sun
-C6H12O6 represents the glucose molecule
-6O2 represents the six molecules of oxygen
Aerobic Cellular Respiration:
C6H12O6 + 6O2 → 6CO2 + 6H2O + energy (ATP)
-C6H12O6 represents the glucose molecule
-6O2 represents the six molecules of oxygen
-6CO2 represents the six molecules of carbon dioxide
-6H2O represents the six molecules of water
-energy (ATP) represents the energy produced by the cell in the form of adenosine triphosphate
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The epinephrine signaling pathway plays a role in regulating glucose homeostasis in muscle cells. the signaling pathway is activated by the binding of epinephrine to the beta-2 adrenergic receptor. a simplified model of the epinephrine signaling pathway is represented in figure 1. the figure presents a simplified model of the epinephrine signaling pathway in muscle cells. a plasma membrane is shown with two transmembrane structures, a beta-2 adrenergic receptor and adenylyl cyclase. epinephrine is shown binding to the extracellular surface of the beta-2 adrenergic receptor. bound to the cytosolic surface of the receptor is a g protein made up of alpha, beta, and gamma subunits. an arrow indicates that g d p that is bound to the alpha subunit of the g protein is now released from the subunit. a successive arrow points to the g protein subunits dissociated from the adrenergic receptor and the alpha subunit dissociated from a complex of the beta and gamma subunits. g t p is shown binding to the alpha subunit. a successive arrow points from the g t p-modified alpha subunit to the cytosolic region of adenylyl cyclase. adenylyl cyclase intersects an arrow that points from a t p to cyclic a m p. a series of arrows follows. an arrow from cyclic a m p points to protein kinase a. an arrow from protein kinase a points to phosphorylase kinase and is paired with a curved arrow pointing from a t p to a d p. an arrow from phosphorylase kinase points to glycogen phosphorylase and is paired with a curved arrow pointing from a t p to a d p. an arrow from glycogen phosphorylase points to an arrow indicating the conversion of glycogen to glucose-1-phosphate. a final arrow points from glucose-1-phosphate to glycolysis. figure 1. a simplified model of the epinephrine signaling pathway in muscle cells question based on figure 1, which of the following statements best describes the epinephrine signaling pathway?
- It involves the opening and closing of ion channels.
- It involves enzymes activating other enzymes.
- It involves changes in the expression of target genes.
- It involves protons moving down a concentration gradient.
That peptide attaches to the epinephrine receptor found on the cell surface as part of the epinephrine signaling cascade.
When cyclic AMP phosphodiesterase, the enzyme that is activated by epinephrine, is inhibited in a muscle cell, there are critical processes that must occur in order for protein kinases to remain active.
How does the adrenaline signalling pathway control muscle cell glucose homeostasis?
In muscle cells, the epinephrine signalling system controls glucose homeostasis. In muscle cells, the epinephrine signalling pathway controls glucose homeostasis. When epinephrine binds to a beta-2 adrenergic receptor, the signalling pathway is triggered.
The cellular properties as glucocorticoid receptor is a component of one of the signal transduction.
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It involves enzymes activating other enzymes.The epinephrine signaling pathway involves a series of enzymatic reactions that are activated by the binding of epinephrine to the beta-2 adrenergic receptor on the surface of muscle cells.
When epinephrine binds to the receptor, it activates a G protein complex associated with the receptor. This complex consists of three subunits: alpha, beta, and gamma. Adenylyl cyclase converts ATP into cyclic AMP (cAMP), which serves as a second messenger in the cell. cAMP activates protein kinase A, which in turn activates other enzymes such as phosphorylase kinase. Phosphorylase kinase activates the enzyme glycogen phosphorylase, which breaks down glycogen into glucose-1-phosphate. The glucose-1-phosphate can then be further metabolized through glycolysis to produce energy.In summary, the epinephrine signaling pathway involves the activation of enzymes, which leads to the activation of other enzymes and the conversion of biomolecules into different forms. It does not involve the opening and closing of ion channels, changes in the expression of target genes, or the movement of protons down a concentration gradient.
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Give one example of an internal factor and one example of an external factor that help regulate cell division.
Which of the following is the BEST claim to answer this question?
Which of the following is the BEST claim to answer this question?
Yusuh should paint their dog house White. The reason is that the data showed it had the lowest average temperature.
The warmest temperature Yusuh recorded was 94 °F
Yusuh should paint their dog house white because the average temperatures are 93, 88, 85. 82 °F. Since 82°F is the lowest that means that it is the best. Black would be the worst.
Yusuh should paint their dog house White.
I think that White is the best choice.
Yusuh should paint his dog house white because the average temperature is 93, 88, 85. 82 °F. Since, 82°F is the lowest, that means it is the best. So, the correct option is (C).
What is Temperature?Temperature is defined as the physical quantity that quantitatively expresses the perception of hotness and coldness that is measured with a thermometer. Thermometers are calibrated in various temperature scales which have historically relied on different reference points and thermometric substances for definition.
For example dull color like black absorbs more heat and the given chart shows that it has highest average temperature so it should not be painted with white color which has least value In order to make the dog more comfortable.
Thus, Yusuh should paint his dog house white because the average temperature is 93, 88, 85. 82 °F. Since, 82°F is the lowest, that means it is the best. So, the correct option is (C).
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PLEASE HELP
Dr. Xavier has estimated that approximately one species of birds will go extinct every four hundred years due to environmental factors that are unrelated to humans. Which type of extinction would this be categorized as?
A) natural extinction
B) calculated extinction
C) habitat destruction
D) mass extinction
Answer:
I think the answer would be no. A) natural extinction.
The extintion was not caused by any artificial causes and no A seemed to be the the most suitable answer.
explain 4 reason for studying genetic
Answer
The 4 reasons for studying genetic are?
Explanation:
1. Genetics are what make you unique, there what separate you from everybody else in the world. 2. They help scientists study why each members in a family that have the same genetics look the same or show a resemblance. 3. Genetics also help scientists discover what diseases run in your family and where the disease came from in your family. 4. Genetics are also a good way to find out similarities and differences that can help improve how human genes function and are controlled.
How does a polar bear use the energy released by the food it eats ?
Answer:
Polar bears largely eat ringed and bearded seals, but depending upon their location, they may eat harp, hooded and ribbon seal. A 121-pound seal can provide 8 days worth of energy – but the bear needs to eat much more in order to store up reserves.
Explanation:
ratios of oxygen isotopes (18o to 16o) are measured in the bones of extant (living) cetaceans (in blue) and their extinct relatives (in orange). from bottom to top, the extinct species are listed most ancient to most recent.
What information does the graph indicate about the evolution of cetaceans? O Living cetaceans evolved a less efficient way of drinking seawater than Georgiacetus. O Living cetaceans evolved to absorb less oxygen from the water than Ambulocetids. O Cetaceans evolved from drinking primarily fresh water to primarily seawater. O Cetaceans evolved from drinking primarily seawater
The information indicated about the evolution of cetaceans from the graph depicting the ratios of oxygen isotopes is: (3) Cetaceans evolved from drinking fresh water to primarily seawater.
Evolution refers to the slow and gradual changes that occur in a population over long periods of time. It takes generations over generations for the effect of evolution to be visible. The evolution usually occurs in order to adapt in a better way in the surroundings.
Cetaceans are the animals of the infraorder Cetacea. It consists of all the aquatic species of animals. It belongs to the class Mammalia of the Animal kingdom. The examples include: whales, dolphins, porpoises. etc.
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match the following. using height in pea plants, what is meant by each of the following terms? 1 . homozygous tall vs. short 2 . heterozygous both genes tall or both genes short 3 . allele one gene tall and the other short
Homozygous: having both genes tall or both genes.
Heterozygous : having one gene tall and the other short.
Allele: An allele is one of two or more versions of DNA sequence.
What genes are always present in a homozygous short pea plant?
A living thing is homozygous if it possesses two identical genes for the same trait. Some short pea plants, according to Mendel, always produce short offspring. There are two brief genes in these plants. These plants were dubbed homozygous short by Mendel.
What is the name of a heterozygous pea plant?
Therefore, an organism that is heterozygous at two separate genetic loci is said to be dihybrid. The Law of Independent Assortment, a key principle of genetics, was established by Gregor Mendel in 1865 while conducting dihybrid crosses on pea plants.
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The correct matching of the terms in accordance with height in pea plant is: (1) homozygous- both genes tall or both genes short; (2) heterozygous- one gene tall and the other short; (3) allele- tall vs. short
Heterozygous refers to the type of genotype where two contrasting alleles are present together in an individual. The phenotype may be different however. It can be the effect of dominance or incomplete dominance of codominance.
Allele refers to the various form of genes. These are contrasting in nature. The alleles are the result of mutations. Each allele is present in the homologous chromosomes at the same locus.
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Explain how sample size can affect the results of an experiment in genetics.
A phenotypic ratio for a dihybrid cross is predicted to be 9:3:3:1. The experimental values are purple smooth = 75, white smooth = 28, purple wrinkled = 24, white wrinkled = 8.
Small sample sizes may lead to deviations from the expected proportion rate of 9 3 3 1, it is for that reason it is fundamental to work with high N samples in genetics.
Why is important the N number sample in genetics?The number of samples or N number sample is fundamental in genetics because small samples may lead to statistical deviations to the expected frequencies that will be associated with a phenotypic ratio in particular, such as in this case white smooth = 28 and purple wrinkled = 24, when both numbers should represent the presence of a dominant character in a dihybrid cross.
Therefore, with this data, we can see that importance of the N number sample in genetics is major in the sense we need to obtain statistically significant differences to confirm a phenotypic ratio of 9 3 3 1.
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The table below gives pKa data for selected amino acids. Which of the amino acids listed will exist predominantly as a molecule with both positive and negative charges at pH of 8.0?
I. Arginine
II. Tyrosine
III. Glutamic acid
IV. Glycine
A. IV only
B. I and III only
C. II and IV only
All the given amino acids listed below will predominantly as a molecule with both positive and negative charges at pH of 8.0
At a pH of 8, all the molecules as unfastened amino acids could have at the least one advantageous and one poor price, because the carboxylic acid could have a -1 price and the amino terminus could have a +1 price. According to the given table, arginine and glutamic acid may even have charged facet chains. Free amino acids include at the very least companies which could come to be charged. The first is the carboxylic acid terminal, which exists as neutral -COOH whilst protonated and negatively-charged -COO− whilst deprotonated. The 2d is the amino terminal, which turns into the positively-charged -NH3+ whilst protonated and the neutral -NH2 whilst deprotonated. Note that "protonated" isn't constantly synonymous with "advantageous." A protonated role may be both advantageous or neutral, relying at the institution in question. Similarly, a deprotonated role may be both poor or neutral. Low pH --> Protonation (COOH) and High pH --> deprotonation (COO-)
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Which material can best be used to cast a footwear or tire impression?
Wax
Plaster of Paris
Rubber cement
Putty
Plaster of Paris is the material which is similar to gypsum cement that can best be used to cast a footwear or tire impression. Thus, the correct option is B.
What is Plaster of Paris?Plaster of Paris is a quick-setting gypsum plaster which consists of a calcium sulphate hemihydrate (white powder) substance. Hence, the plaster of paris is a white colored powder. The plaster gets its name Plaster of Paris because it is manufactured by heating gypsum at 373- 393 K or 150°C or 300°F. On heating gypsum at 373-393 K, it loses water molecules and becomes calcium sulphate hemihydrate. This product is known as the plaster of Paris. The main ingredient of Plaster of Paris is gypsum, which is found abundantly in Paris.
Gypsum product which is similar of plaster of Paris is used. The hardness and durability of this product makes it a superior product for casting footwear or tire impressions.
Therefore, the correct option is B.
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Some populations of the fish species Astyanax mexicanus live in freshwater pools within deep
underground caves in northeastern Mexico. Individuals in these populations are blind. Other
populations of the same fish species live in surface waters and have fully functioning eyes. Over
time, what will MOST likely happen to the sighted and blind types of Astyanax mexicanus?
Individuals in Astyanax mexicanus populations are blind. Other populations of the same fish species live in surface waters and have fully functioning eyes.
What are the characteristics of Astyanax mexicanus?The Mexican tetra, also known as the blind cave fish, blind cave characin, and blind cave tetra, is a freshwater fish of the family Characidae of the order Characiformes.
The fish may be born blind or it may be born with functional eyes which later cloud over and shrink because there is no light in the dark caves and eyesight is not necessary. The lifespan of the blind cave fish is approximately ten years.
Growing to a maximum total length of 12 cm (4.7 in), the Mexican tetra is of typical characin shape, with unremarkable, drab coloration.
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Lisa's minutes slow and Marcus watch is 25 minutes fast. If Lisa's watch is presently showing 9:43, what time is Mike's wach presently showing?
Lisa's watch is showing 9:43, Marcus's watch is 25 minutes fast, 25 minutes slow, therefore Marcus's watch is also showing 9:43.
How do the minutes pass for them?If Lisa's watch is 25 minutes fast, that means that for every minute that Lisa's watch shows, Marcus's watch is actually 25 minutes behind. Therefore, if Lisa's watch is currently showing 9:43, then Marcus's watch would be showing 9:18.
However, Marcus's watch is also 25 minutes slow. This means that for every minute that Marcus's watch shows, it is actually 25 minutes behind the real time.
Therefore, Marcus's watch is showing 9:18, but in reality it's actually 9:43.So, to summarize, Lisa's watch is showing 9:43, Marcus's watch is 25 minutes fast, 25 minutes slow, therefore Marcus's watch is also showing 9:43.
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