Answer:
The reactivity of metals increases as you move left in a period and as you move down in a group, so Marie needs to know the period and group of the element inside each box. Boxes that show locations in groups 1 or 2 or in period 8 contain the most reactive elements.
What are two current advantages of using nuclear energy over coal and oil for energy?
More readily available
Less expensive to build a nuclear plant
Less pollution
Uses less fuel
Answer:
I think it is b and c
less expensive and less pollution I believe
What biological concept was mendel studying when he crossed pea plants many times over many generations?.
Answer:
Inheritance Patterns
Explanation:
Mendel was studying how genes are past on to future generations and in what circumstances this can occur. He used pea plants as they multiply and grow quickly allowing him to observe many generations much faster than he would be able to observing humans or even other mammals. He also used pea plants because this way he could control reproduction of his pea plant population to adjust to specific questions he had in terms of his research.
An apparatus for measuring thermal conductivity employs an electrical heater sandwiched between two identical samples of diameter 25 mm and length 60 mm, which are pressed between plates maintained at a uniform temperature To = 77°C by a circulating fluid. A conducting grease is placed between all the surfaces to ensure good thermal contact. Differential thermocouples are imbedded in the samples with a spacing of 15 mm. The lateral sides of the samples are insulated to ensure one-dimensional heat transfer through the samples.
Required:
a. What is the thermal conductivity of the stainless steel sample material?
b. What is the average temperature of the samples?
The thermal conductivity of the stainless steel sample material is 30Q/ΔT.
Thermal conductivity
The thermal conductivity of the stainless steel sample material is calculated as follows;
[tex]k = \frac{Ql}{A\Delta T}[/tex]
where;
Q is quantity of heat transferred
l is the length of heat flow = 15 mm = 0.015 mA is the area ΔT is change in temperatureArea = πd²/4
Area = π(25 x 10⁻³)²/4
Area = 0.0005 m³
[tex]k = \frac{Q \times 0.015}{0.0005 \times \Delta T} \\\\k = 30\frac{Q}{\Delta T}[/tex]
Thus, the thermal conductivity of the stainless steel sample material is 30Q/ΔT.
More information is needed on the heat supplied to the samples and the final temperature.
Learn more about thermal conductivity here: https://brainly.com/question/11213835
Using Grime’s Triangle as a framework, discuss how natural selection and trade-offs work to form the niche of species.
Natural selection affects the scope of the niche of a given species. Moreover, trade-offs are associated with differences in traits that also may affect the niche of a species.
Natural selection and trade-offsNatural selection refers to the differential survival or reproduction of individuals in particular environmental conditions.
The different niches occupied by species are mainly a consequence of differential trade-offs among species, i.e., by differential phenotypic features that generate negative correlations among species.
Grime’s Triangle is based on the associations (trade-off) between adaptation to productivity and/or competition, stressful environments (habitats) and disturbance.
Learn more about natural selection here:
https://brainly.com/question/23929271
The ability of blood to transport oxygen is dependent on the solubility coefficient of oxygen and the presence of
why is Valparaiso Chile hotter than Sydney Australia if they are at the same latitude?
Answer:
Places at the same latitude may have very different climates if one is on a coast and one is inland. On the coast, the climate is influenced by warm moist air from the ocean. ... Farther inland, the climate is influenced by cold or hot air from the land. This air may be dry, because it comes from over land
hope it helps
which is most likely to happen to a population that becomes anatomically isolated from the rest of its species
Answer:
entire species will become extinct.
If the normal nucleotide sequence was tacggcatg, what type of gene mutation is present if the resulting sequence becomes taggcatg?.
What structural circumstance in dna sets up the requirement for its semidiscontinuous nature of replication?.
In a single strand of dna, nucleotides are connected by which type of bond?.
Answer: Hydrogen Bonds
Explanation: Nucleotides are held together by loose hydrogen bonds that are broken during DNA separation.
Have a nice day! :)
Your friend has blue eyes.
That is an expression of what?
conditioned response
dominant trait
damaged genes
recessive alleles
What is used by scientists to visualize how morphology explains evolution?
phylogenetic tree
Punnett square
pedigree
genetic diagrams
Answer:
phylogenetic tree
Explanation:
A phylogenetic tree is a drawing that shows how organisms are related by evolution.
All sensory information, with the exception of olfaction, must pass though the ________ as it travels to the cerebral cortex. cerebellum reticular formation hypothalamus thalamus
Answer:
[tex]\huge\boxed{\sf Thalamus}[/tex]
Explanation:
All the sensory information through sensory neurons must pass through the thalamus.
Thalamus:
connects cerebral cortex and midbrain.collects information from the midbrain and passes it to the cerebral cortex.is involved in more functions such as; detects sensations of visual, auditory, and gustatory systems.is concerned with memory, emotions.[tex]\rule[225]{225}{2}[/tex]
What is Cascadia?
brainliest
Beneficial proteins in the bloodstream that pick up cholesterol for removal by the liver are called.
Answer:
high-density lipoproteins?
Explanation:
I think this is the answer... but I'm not sure. if you need me to delete this, I will.
ozone depletion:
1) what is ozone?
2) where is the ozone layer?
3) why is ozone layer important to us?
(best answer gets to be the brainliest!)
1) Ozone (O3) is a highly reactive gas composed of three oxygen atoms.
2) The ozone layer is the common term for the high concentration of ozone that is found in the stratosphere.
3) It protect us from harmful UV rays and radiation and help to reduce temperature.
Answer:
1. What is ozone? Ozone is a gas that is made up of 3 atoms, and is extremely reactive.
2. Where is the ozone layer? The ozone layer is located in the stratosphere.
3. Why is the ozone layer important to us? The ozone layer is important to us because it protects the Earth from UVB that comes form the Sun.
Explanation:
I hope it helps, have a wonderful day!
Sandra~
A benefit of flashcards is that they are
a.
Portable
c.
Very large
b.
Contains lots of information
d.
Ask many questions on one card
Please select the best answer from the choices provided
A
B
C
D
The use of plants as sources of pharmaceutical products is an application of agricultural biotechnology commonly called
Answer:
Your answer is Molecular pharming.
Explanation:
Molecular pharming -It is defined as the production of active pharmaceutical substances in genetically modified organisms (GMOs). - Plants are preferred as plants do not carry pathogens. Hope this helped :)
What is the anammox reaction, and when does it occur in the nitrogen cycle?
Anammox (anaerobic ammonium oxidation), which is a reaction that oxidises ammonium to di-nitrogen gas using nitrite as the electron acceptor under anoxic conditions, was an important discovery in the nitrogen cycle.
The nitrogen cycle's anammox reaction takes place when nitrogen compounds are converted back into atmospheric nitrogen gas during the denitrification phase.
Thus, In order to avoid the buildup of too much nitrogen (such as nitrates and nitrites) in the environment, which can result in water pollution and other ecological issues, denitrification is an essential phase in the nitrogen cycle.
Low oxygen conditions, such as sediments in wetlands, wastewater treatment facilities, and oxygen-depleted regions of oceans, are where anammox bacteria carry out the anammox process.
In the end, this process aids in maintaining the balance of nitrogen in ecosystems and preventing nitrogen pollution by naturally removing excess nitrogen molecules from these habitats.
Thus, The nitrogen cycle's anammox reaction takes place when nitrogen compounds are converted back into atmospheric nitrogen gas during the denitrification phase.
Learn more about Nitrogen cycle, refer to the link:
https://brainly.com/question/31808912
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3) A zygote develops into a multicellular organism through a
a) mitosis and differentiation
c) mitosis and meiosis
b) recombination and communication d) genetic engineering and natural selection
Describe the temperate coniferous forest I give brainleist for first anwser
Answer:
Temperate coniferous forest is a terrestrial biome defined by the World Wide Fund for Nature. Temperate coniferous forests are found predominantly in areas with warm summers and cool winters, and vary in their kinds of plant life.
What does it mean if a liquid is 'hypertonic' to plant cells?.
All of the above are members of the Kingdom Animalia. Why? A) they are all producers B) they all can detect light C) they all perform photosynthesis D) they all must eat in order to get nutrition
Answer:
The Answer Is D :D Hope This Helps
P.S Im from K12
Explanation: Took a Test
how many blood cells do we have.
Answer:
Around 35 trillion
Explanation:
Answer:35 Trillion
The body creates these cells at a rate of about 2.4 million a second
Explanation:
Can someone help me on dis
the large muscular sac that continues the mechanical and chemical digestion of food
Answer:
stomach
Explanation:
uh stomach lol i mean when you swallow it goes to your stomach and you just digest it
2. Name the hormones that regulate the balance of sodium and potassium levels and explain how they work.
Aldosterone regulates the salt and water balance of the body by increasing the retention of sodium and water and the excretion of potassium by the kidneys.
How have microscopes helped people learn about living things on a different scale?
Answer:
We cannot see bacteria and other small cells with the bare eye. With microscopes, we are able to open a whole nother world for research and science.
In this example the marker dna includes fragments that have 23,130, 9,416, 6,557, 4,361, 2,322, 2,027, and 564 base pairs. Approximately how many base pairs are in the dna fragment indicated by the letter a?.
Answer:
6,557
Explanation:
It's the line that lines up with A and when it turns, 6557 is the correlating number.
Who was the english scientist who proposed the theory known as ""natural selection""?.
Answer: Charles Darwin
Explanation: He developed the idea of natural selection after a five-year journey to study plants, animals, and fossils in South America and on the islands in the Pacific.
