Which field studies all organisms that have existed, their history, and
common ancestors?
A. Ecology
B. Biotechnology
C. Genomics and Molecular biology
D. Tree of Life field

A. Ecology

Explanation:

The branch of biology that deals with the relations of organisms to one another and to their physical surroundings.

"a scientist studying a whale and its surroundings would need to understand the structure of atoms in case something was negatively affecting the whale or its surroundings."

explanation:

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answer; ///i believe the answer your looking for is (ribosomes);