Answer: prophase I
Explanation: During prophase I, homologous chromosomes pair up and exchange sections of DNA. This is called recombination or crossing over. This is followed by metaphase I where the connected pairs of chromosomes align at the middle of the cell. After the pairs of chromosomes are aligned, anaphase I begins.
food and territory are balancing factors in an ecosystem what type of phenomena balance these factors
Answer:
uhh either natural and reproductive pretty sure it's reproductive
Assume that each finch comes from a large population of similar finches
in its particular environment. Imagine a drought in the environment of
Finch 1 makes the small seeds they normally feed off of scarce. Describe
how natural selection could cause the population of finches in the first
group to evolve over time to resemble the population of Finch 2.
Directional selection increased the frequency of individuals carrying the larger beaks and decreased the frequency of individuals carring small beaks.
What is directional selection?
Directional selection is a way in which natural selection acts by increasing the proportion of individuals with an extreme phenotypic trait.
This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.
How natural selection could cause the population of finches 1 to evolve over time to resemble the population of Finch 2?
In the exposed example, after the drought there were almost no seeds available for finch 1 to feed.
The introduction of a new allele to the population (by mutation or genetic flow) might have produced a few individuals with beaks similar to the one of Finch 2.
This beak was better for feeding. So individuals carrying this beak increased their fitness.
With time, the average size of the beaks was larger. The trait modification was related to the availability of only larger seeds with thick husks.
Eating large seeds with medium or small-sized beaks was impossible, so Finches needed to adapt, developing larger beaks to break bigger and harder seeds and eat the content.
Directional selection was responsible for the rapid change in the finches' beaks size after the drought.
The evolutive force modified the allelic frequencies, increasing the frequency of genetic variants that expressed the larger beak size and declining the frequency of the alleles that expressed smaller beak size.
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Which are some characteristics of adaptive social behavior? Select three options. Occurs among members of the same species is not usually passed onto offspring is determined by natural selection increases an animal's likelihood of reproducing does not usually help an animal survive.
Adaptive social behaviours are animal behaviour they adapt in species community. It occurs among the same species, increases animals reproduction and is determined by natural selection.
What is adaptive social behaviour?The species of the organism exhibits a social adaptive behaviour among themselves to protect, reproduce, and survive. Aminals like insects, mammals and birds show adaptive social behaviours among their species.
This behaviour affects the reproduction of the species of the ecosystem and is subject to natural selection. An example of this behaviour is a group of ants together carrying food particles.
Therefore, option a. among species, c. determined by natural selection and d. increases reproductive chances are the characteristics of adaptive social behaviour.
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Answer:
A, C, D
Explanation:
Occurs among members of the same species
is determined by natural selection
increases an animal's likelihood of reproducing
got 100% on edge quiz
in which direction do arteries carry blood
Answer:
Arteries carry blood away from the heart
Explanation:
Veins carry the blood back to the heart.
Hope this helps!
What are the four major glands of the endocrine system?
adrenal glands, pituitary gland, heart, thyroid
pancreas, adrenal glands, pituitary gland, thyroid
pancreas, adrenal glands, thyroid, liver
pituitary gland, thyroid, intestines, adrenal gland
Answer:
pancreas,adrenal glands,pituitary gland&thyroid
Explanation:
b/c the four major gland of endocrine system is this!
the answer is correct?
Various species of the flowering plant of the genus Chrysanthemum have 18, 36, 54, 72, and 90 chromosomes. The variation is likely due to:
Various species of the flowering plant of the genus Chrysanthemum have 18, 36, 54, 72, and 90 chromosomes. The variation is likely due to polyploidy.
What is polyploidy?Polyploidy can be defined as the number of complete sets of chromosomes in a given cell of an organism.
A diploid organism contains two complete sets of homo-logous chromosomes in its somatic cells.
Many organisms used polyploidy as an evolutionary strategy for adaptation to challenging environmental conditions.
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Explain why a river forms a valley. pls help
Answer:
Erosion.
Explanation:
Erosion is when rocks/dirt move from one place to another. Erosion happens due to flowing water such as streams or rivers. Over time, these streams/rivers can erode the land around it to create valleys.
Hope that helps!
Justin is growing a garden and has many different types of liquids with which he could water his plants. He has water, coffee, milk, and fertilizer dissolved in water. He wants to know which liquid will help his tomato plants grow the best.
Independent variable-
Dependent variable-
Controlled variables-
Hypothesis-
I NEED HELP !!!!!!!
Answer:
Explanation:
To identify the different variables from this experiment, we must first understand what the different types of variables depict.
Independent variables are those variables that do not rely on the conditions of the experiment. They are what causes the experiment to proceed the way we want.
Dependent variables are the variables that rely on the effect of the independent variables. They are what we are actually testing for.
Controlled variables are the variables that are constant in an experiment and their outcomes are used to checkmate an experiment.
In the experiment by Justin:
Independent variable: water, coffee, milk
dependent variable: garden growth
controlled variable: fertilizer
What is the lysosome function
Answer:
They break down excess or worn out cell parts. They may be used to destroy invading viruses and bacteria.
Explanation:
Hope this helps<3
Answer:
They break down excess or worn out cell parts. They may be used to destroy invading viruses and bacteria.
Explanation:
True or false: Clotting factor numbers are in order of their discovery and not their position in the clotting pathway.
________ is the term for warm-blooded animals that internally control their body temperature. Ectotherm Endotherm Poikilotherm None of the above.
Answer:
endotherm
Explanation:
hope this helps bud
Answer:
B: Endotherm
Explanation:
An ectothermic animal is an animal that relies on external heat sources to control it's body temperature.
An endothermic animal is an animal that maintains a constant body temperature without the help of the environment.
A poikilothermic animal is an animal that has an unstable internal body temperature and relies on the ambient temperature.
Why is algal bloom around the edges of the Black Sea than spreading all over it?
Answer:
Algal bloom. Bright green blooms may also occur. These are a result of blue-green algae, which are bacteria (cyanobacteria). Some algal blooms are the result of an excess of nutrients (particularly phosphorus and nitrogen) into waters and higher concentrations of these nutrients in water cause increased growth of algae and green plants.
Explanation:
With respect to antigens and antibodies, what do type O negative and type AB positive blood have in common
Answer:
Nothing
Explanation:
They have no common attributes
Desertification is caused by a combination of converging problems, including:
A. contamination of irrigation water and natural cycles.
B. overgrazing, deforestation, drought, and climate change.
C. famine, starvation, and biodiversity loss.
D. urban sprawl, pesticide contamination, and natural cycles
What environmental factor would have caused the changes as resulted in the chart above? Question 18 options: The climate changed, and the color of the trees favored the light-green (Dd) genotype over the others. The climate changed, and the color of the trees favored the Green (DD) genotype over the others. There was no environmental change, the heterozygous genotype is always more dominant within a population.
Climate change caused the color of the trees to be favored the light-green (Dd) genotype over the others.
What is an adaptation?An adaptation is a special feature or structure possessed by organisms which enhances their chances of survival in their environment.
Adaptation could be due to environmental changes could such as:
temperature flooddroughtAdaptation to enviromental changes could make a particular genotype more dominant.
For example, the sickle cell carrier genotype is more common in areas that malaria is endemic.
Therefore, the environmental factor that would have caused the changes is climate change which caused the color of the trees to be favored the light-green (Dd) genotype over the others.
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A student is investigating the effect of light intensity on the rate of photosynthesis . She observes that as light intensity increases the rate of photosynthesis increases. Which explanation best describes how the rate of photosynthesis can affect the biodiversity of an area?
Explanation: If the rate of photosynthesis increases, then the number of bubbles will increase.
Photosynthesis forms oxygen gas which is utilized by the animals during respiration. As the rate of photosynthesis increase with the intensity of light, the biodiversity of an area also keeps on increasing.
What is Photosynthesis?
Photosynthesis is the process by which plants produce their food with the help of sunlight, carbon dioxide, and chlorophyll, which traps the sunlight (solar energy) in the leaves of plant. This process produces sugar (food) and oxygen gas as by-product.
The oxygen gas produced in this reaction is utilized by other organisms for respiration. The organisms use oxygen gas and release carbon dioxide which is used by the plants.
As the intensity of light is increased, the rate of photosynthesis also increases which will lead to more production of oxygen gas. This oxygen will help other animals in respiration .Thus, the biodiversity of an area will increase with the rate of photosynthesis.
Apart from this, plants also provide food to the animals therefore, the more the number of plants, more will be the animals and hence increase in biodiversity of an area.
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!!ANSWER FAST!! Find the velocity of a wave in a wave pool if its wavelength is 4 m and its frequency is 0.20 Hz.
An earthquake produces a wave that has a wavelength of 700 m and travels at 5000 m/s. What is its frequency?
Answer:
1) 0.80 m/s
2) 7.143 Hz
Explanation:
The formula to solve these equations is Velocity = Frequency * Wavelength. So I did that and these are my answers.
photosynthesis equation with explanation
The photosynthesis equation is as follows:
6CO2 + 6H20 + (energy) → C6H12O6 + 6O2
★ Carbon dioxide + water + energy from light produces glucose and oxygen
What is photosynthesis ?
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
More to know :-
There are two types of photosynthetic processes: oxygenic photosynthesis and anoxygenic photosynthesis. They both follow very similar principles, but oxygenic photosynthesis is the most common and is seen in plants, algae and cyanobacteria.
Explanation:
6CO2+ 6H2O sunlight and chlorophyll C6H12O6+ 6O2
it's a type of nutrition in which green plant manufacture their food using carbon dioxide and water in present of sunlight and chlorophyll
Which nutrient do adolescent females need less of than adolescent males?.
Answer:
Energy (calories) and protein are essential in pubertal development. Adolescent females require approximately 2200 calories/day, whereas male adolescents require 2500-3000 calories/day. Additional intake requirements include fat, calcium, iron, zinc, vitamins, and fiber.
What will happen when a plant cell is kept in hypotonic solution?.
write the location and function of ciliated epitheliun.
Answer:
Ciliated epithelium performs the function of moving particles or fluid over the epithelial surface in such structures as the trachea, bronchial tubes, and nasal cavities. It often occurs in the vicinity of mucus-secreting goblet cells.
Gratitude Attitude: THANKS!
Explain the difference between a humoral and a cell-mediated immune response.
Answer:
the main difference between the humoral immune response (HIR) and cell-mediated immune responses (CMIR) is : HIR provides immunity against antigens and pathogens in body fluids, while CMIR provides immunity against the body’s own cells that have either become cancerous or infected.
Explanation:
Hope this helped.
During photosynthesis, how is energy converted within the cell?.
Answer:
During the process of photosynthesis, light penetrates the cell and passes into the chloroplast. The light energy is intercepted by chlorophyll molecules on the granal stacks. Some of the light energy is converted to chemical energy. During this process, a phosphate is added to a molecule to cause the formation of ATP.
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Alpha-linolenic acid and linoleic acid are classified as _________ fatty acids.
Alpha-linolenic acid and linoleic acid are classified as essential fatty acids. They cannot be synthesized by the body.
What are essential fatty acids?Essential fatty acids are a special type of fatty acids that cannot be synthesized by the body.
Therefore, the essential fatty acids need to be ingested in the diet, i.e., they must be obtained from foods.
The two major families of essential fatty acids include omega-3 fatty acids and omega-6 fatty acids.
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Will give brainliest Element X decays radioactively with a half life of 7 minutes. If there are 270 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 13 grams?
Answer:30.6
Explanation:
1. 13= 270 (.5)^t/7
2. 13/ 270=270 (.5)^t/7/270
3. 0.0481481=(.5)^t/7
4.log (0.0481481= log ((.5)^t/7)
5. 7 log (0.0481481)/ log(.5)= t log (.5) /log (.5)
6. t= -9.2219429/-0.30103
t= 30.63463
t= 30.6 minutes
If potatoes grow by planting actual potatoes not seeds, where did the first potato come from??
Answer:
It won't let me type it so look at the picture
Explanation:
Hope this helps!
In a species of walruses, tusk size is controlled by a single gene that has only two alleles. The same species lives on two different sides of the Arctic Ocean. On one side, the amount of ice is much thicker and requires for walruses to have longer tusks to move out of the water. On the other side, the ice is not as thick and walruses have shorter tusks. Which of the following best describes the walruses in the two populations?
Adaptive alleles that are beneficial in one environment can be deleterious in another, due to selective pressures.
The species will eventually develop an intermediate tusk size in both populations.
The alleles of both populations will undergo directional selection to have the similar gene pools.
The species will risk decline if they continue to differ in allele frequencies and genetic diversity.
NEED ASAP!!! TAKING TEST RN!!! WILL GIVE BRAINLIEST AND 50 POINTS!!!
Answer:
Adaptive alleles that are beneficial in one environment can be deleterious in another, due to selective pressures.
Explanation:
just took the quiz.
A soil sample that contains
50% clay, 50% sand, and 0%
silt is called
A. silt loam
B. sandy clay
C. loam
The dark meat of chicken is rich in ______ to keep the thigh and drumstick muscles contracting for long periods of running.
Answer:
eww
Explanation:
this is why i think that
What type of cell presents antigens that influence the outgrowth of axons in the long tracts of the developing and recovering brain
