BIOLOGY HIGH SCHOOL

What is a population's carrying capacity? A) Its maximum population size to remain stable B) Its minimum population size to avoid extinction C) Its exponential growth over time D) Its density-independent growth

Answers

Answer 1
Answer: A, its maximum population size to remain stable
Answer 2
Answer:

Final answer:

Carrying capacity in biology refers to the maximum population size that an environment can sustain indefinitely without the environment becoming degraded. It's the number of individuals that the available resources within a particular environment can support. If the population exceeds this number, the environment may become degraded.

Explanation:

The carrying capacity of a population in biology refers to A) Its maximum population size that an environment can sustain indefinitely without significant degradation of that environment. In other words, carrying capacity is the number of individuals that a specific environment's resources can support without causing negative impacts on the environment. For instance, if there are too many deer in a forest and food resources become scarce, the forest has reached its carrying capacity for deer. If the population continues to increase, the environment will become degraded, and the health of the deer population will decrease. Therefore, the accurate answer is A) Its maximum population size to remain stable.

Learn more about Carrying Capacity here:

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1. Carbondioxide is mainly stored in what two parts of
our planet?
2. What
has recently caused atmospheric carbon dioxide to increase?
3. List 2 similarities
and 2 differences between the carbon cycle on land
and the carbon cycle in water.

Answers

1 - carbon dioxide is mainly found in the lithosphere, and in the ocean ( generally in larger bodies of water)

2 - global warming + pollution + population increase + cutting down forests has all factored toward the growing amount of carbon dioxide in our atmosphere.

3 - carbon cycle on land moves faster than in water
on land the caarbon is czarried whereas in the water carbon is dissolved

plants and animals help both in water and land carry out the carbon cycle
both land and water have many carbon resources such are sediments and rocks.

Professor Chapman is very friendly with her students, allowing them extra time on assignments and giving them the freedom to come late to class whenever they want. Dr. Weldon, on the other hand, is much stricter in the classroom. She does not accept late assignments, tells students "be on time or don't come to class," and at least two students got no credit on the term paper because they turned it in a day late. Both professors teach with the same quality but are different in their interactions with students. When evaluation time comes, students tend to give Dr. Weldon far lower marks because they dislike her, not because she is a bad teacher. This is an example of the __________ effect.

Answers

Answer:

The correct answer is - This is an example of halo effect.

Explanation:

Halo effect is considered to be a cognitive bias in which we judge a person based on his behavior and character and make an impression in our mind about that person that the person is nice, good or bad.  

So it this case students have got a bad impression of Dr. Weldon because she does not accept late assignments, tells students "be on time or don't come to class," and at least two students got no credit on the term paper because they turned it in a day late.

So when evaluation time comes, students tend to give Dr. Weldon far lower marks because of the halo effect.

Answer:

The Halo Effect.

Explanation:

She seems nicer, kids like her better. That's basically what it sums up to.

Hope this helps. :)

What is community ecosystem individual and population from least to greatest?

Answers

Individual , population , community then ecosystem.

Calcium levels in the body are maintained by hormones. If the blood calcium level rises above a set point, calcitonin is secreted by the thyroid gland and sets into motion responses to lower the blood calcium back to the set point. If the blood calcium level falls below a set point, the parathyroid gland secretes parathyroid hormone that sets into motion responses to raise the blood calcium. These homeostatic responses are examples ofa. positive feedback
b. effectors
c. sensors
d. negative feedback

Answers

Calcium is the most abundant mineral in the body and is essential for the development of bones and teeth. The calcium levels in the body are maintained by the thyroid gland and hormones.

These homeostatic responses are examples of:

Option D. Negative feedback

This can be explained as:

  • When there is a change in a function and causes the output to decrease and vary the process is called negative feedback.

  • The body receptors sense a change in the calcium level brings about necessary alterations to counteract the situation.

  • The endocrine like the thyroid gland secretes parathyroid hormone when the calcium decreases. While calcitonin reduces the excess of calcium in the body.

Therefore, calcitonin and parathyroid balances the calcium levels and is negative feedback.

To learn more about calcium negative feedback follow the link:

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Answer:

positive feedback

Explanation:Because when you get motion that means its positive but if doesn't feel motion than that is negative.

Scientists believe that ancient ancestors of all animals were.A. Single-celled prokaryotes that reproduced asexually
B. Single-celled eukaryotes that sometimes grew in colonies
C. Multi-cellular organisms that were probably autotrophic.
D. Multi-cellular organisms with an alternation of generations lifecycle.

Answers

The correct answer is B. Single-celled prokaryotes that sometimes grew in colonies
A is the answer
.....................................................

The major mechanism driving cellular differentiation is the difference in gene..... A) Expression B) Sequences C) Order D) Replicaiton

Answers

Expression 


Cellular differentiation occurs throughout the cell development of a multi-cellular organism. It occurs when the cell changes from a simply zygote into a complex system of tissues and cell types. Stems cells are cells which have the potential to develop into many different cell types in the body during early life and growth. 
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