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e-lub [12.9K]
3 years ago
6

Which phrase describes organisms that formed index fossils?

Biology
2 answers:
Deffense [45]3 years ago
6 0

Answer:

A

Explanation:

Airida [17]3 years ago
4 0

Answer:

a

Explanation:

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What is used for building structures in the body they can also be enzymes?
Anna35 [415]

Answer:

The correct answer is - proteins.

Explanation:

Enzymes are made up of the long chains of amino acids that are linked by the peptide bonds that make a polypeptide chain known as proteins. Proteins are the building block of the enzyme and the building of thevarious structures in the body.

Enzymes are made up of two protein that also plays as the role of a biological catalyst whereas protein only plays role in forming different structure and performing functions.

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3 years ago
If a person’s heart rate increases, how will this benefit the muscular system?
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Answer:Exercise increases the rate at which energy is needed from food, increasing the need for both food and oxygen by the body. This is why when we exercise both pulse/heart rate and breathing rate increase.

Explanation: Hope this helps

5 0
3 years ago
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Liula [17]
1.a
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Someone please help, these questions are hard
Allushta [10]

Answer:

B: Polyermase Chain Reaction

Explanation:

PCR is when we take a segment of DNA and multiply it! We can see that the number of DNA segments are increasing therefore it is PCR. Hope this helps!

8 0
3 years ago
What processes must a metamorphic rock go through to become an igneous rock
Damm [24]
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