A Only one variable changed
Answer:go
Explanation: to quizzlet they give you the answers
Answer:
Radioactive decay means the process by which unstable nucleus of an atom spontaneously releases energy through the emissions of radiation used in dating fossils and rocks.
Relative dating mean the time required for half the atoms in an element to divide in half.
Explanation:
So radioactive decay belongs to A.
And relative dating belongs to B.
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Chemically speaking, enzymes are composed of chains of amino acids, and they are considered to be a type of protein.