DNA is the correct answer.
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Hello there!
The answer is Mutation.
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By the animal adapting they are able to reproduce more efficiently
No. It's true for AUTOTROPHES
<u>The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.</u>
