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Tema [17]
3 years ago
6

Which of the definitions below best defines a mutation?

Biology
1 answer:
victus00 [196]3 years ago
8 0

The correct answer is: A. A change in a cell's genetic material.

Mutations occur in DNA as a result of mistakes during the DNA replication (when repair mechanisms don’t fix it) or as the result of environmental factors (e.g. UV light). Mutations can have positive impact, by increasing the genetic variation or can have negative effect, causing the diseases or cancer.

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Scientists calculated the net primary productivity at two different forest sites. Both forests have the same gross primary produ
Katen [24]

Answer:

The answer is C.

Explanation:

Net Primary Productivity is a term that is used to express the difference between CO2 that is taken in by the plant with photosynthesis minus CO2 that the plant releases.

The two forest sites given in the example may not have the same biodiversity and the same species of plants so we can't be sure of option B.

Again for the same reasons, we can't be sure of option D because we do not know the specific plant species in each forest since they are in different areas.

Option A can be ruled out for the same reasons, the lack of information about the forest sites, since we do not know the death rate of the plants in either of the forests.

Option C can be true because forest A has a higher net primary productivity rate which can be an indication of lower respiratory activity hence lower CO2 production, resulting in the given higher net primary productivity.

I hope this answer helps.

4 0
3 years ago
If the vibrations have a low frequency, the sound is heard as a _______. If the vibrations have a high frequency, then the sound
vazorg [7]

Answer:

B

Explanation:

if the vibration has a low frequency then the sounds gonna be low as well as a high frequency having a higher sound

6 0
2 years ago
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Which of the following exists as a single, self-supporting cell that travels using numerous hairlike cilia?
NeX [460]

Answer:

amoeba i think i might be wrong

Explanation:

7 0
3 years ago
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1. What gene involved in skin pigment varies a great deal across populations?
Ymorist [56]

Answer:

Explanation:12werffdew

5 0
2 years ago
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The main organ of the muscular system are the<br> Heart<br> Brain<br> Muscles<br> Bones
MatroZZZ [7]

Answer:muscles

Explanation:muscular/ muscles take a hint the answer is in the question X_X

4 0
3 years ago
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