answer for this question is A
The protein in the question can be referred to enzymes since its made of protein. The first statement is the answer
The answer is “Variation that decrease reproductive success are more likely to be passed on.”
The given blank can be filled with medulla.
The medulla also called the medulla oblongata is the segment of the brainstem that is factually the stem, which elongates from the brain. The medulla is positioned below the pons and above the spinal cord and is a major relay intersection for information conducted to and from the spinal cord and the brain. This section of the brain is a monitoring center for circulation and respiration.
