BIOLOGY HIGH SCHOOL

Which of the following is an abiotic factor in an ecosystem?

Answers

Answer 1
Answer:

your answer would be sunlight

hope i was helpful. XD
Answer 2
Answer: what are the choice answers

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The populations of the great apes in Africa are recovering and on the rise. Please select the best answer from the choices provideda. True
b. False

Answers

It is false that the populations of the great apes in Africa are recovering and on the rise.

Answer: FALSE (just took the test)

A new recruit in the armed forces stands at attention on a hot afternoon. He decides to lock his knees, thinking it will make the standing easier. After a short while, he faints. What has occurred?

Answers

There are no options to choose from and this makes it hard to answer the question. I hope my answer is correct and comes to your help. The reason that the new recruit fainted was that he did not use muscular compression to return the blood to the heart and thus his brain became devoid of oxygenated blood, resulting in the new recruit getting fainted.

Which statement below best describes the role of mutations in evolution by natural selection? A Mutations increase the genetic variation within a population, and each of the variants provides an advantage under different circumstances
B Mutations increase the genetic variation within a population, and some of the variants may provide an advantage to individuals over time
C Mutations help stabilize the genetic variation within a population, and only one or two variants generally provide an advantage to individuals.
D Mutations help reduce the genetic variation within a population, and thus increasing the rate that new adaptations develop.

Answers

The role of mutations in evolution by natural selection is option b. Mutations increase the genetic variation within a population.

Role of mutation in evolution:

The mutation is significant as the first step of evolution since it developed the new DNA sequence for the specific gene that developed the new allele.

Also, at the same time, it rise the genetic variation within the population also it provides as an advantage to individual

hence, the option b is correct.

Learn more about mutation here: brainly.com/question/14844437

Answer:

B. Mutations increase the genetic variation within a population, and some of the variants may provide an advantage to individuals over time

Why is it that two species cannot occupy the same niche for an extended period of time?

Answers

A niche is a specie's function in its habitat or its level on the food chain, so two species competing at the same level for the same food and habitat eventually one species will have to migrate or starve due to lack of food.

Answer:

In terms of ecology a niche can be defined as role or function an organisms play within the ecosystem. A niche represent the interaction of an organism with the living and non living components of the ecosystem. It is represented by predator-prey relationships, parasitic and mutualistic properties and other functions. The two species cannot occupy the same niche for an extended period of time, this can be explained by competitive exclusion principle. According to this principle, no two species can have the same ecological niche. The two or more species competing for the same resource in an ecosystem the one species having more favorable adaptations will be able to thrive resources better than others. Therefore, this  will result in the decrease in abundance, migration and extinction of weak and less competitive species.


Coal and wood are found in nature.they are both examples of

Answers

 they are examples of  Natural resources

What is the primary role of the stomach in the human digestive system? A. producing specialized salts that absorb fats
B. absorbing water and minerals from undigested food
C. using muscle movements and enzymes to break down food
D. transferring nutrients from digested food to the bloodstream

Answers

C. using muscle movements and enzymes to break down food
The answer is (C) using muscle movements and enzymes to break down food.
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