Answer:
Other cells.
Explanation:
All cells come from other cells as cells are "produced" when a cell divides into two.
The answer is genetic variation because crossing over leads to changing the traits inherited by the daughter cells
Answer:
physical change
Explanation:
it changes the form of the substance
Comparative anatomy is the study<span> of similarities and differences in the anatomy/structures in organisms of </span>different<span> species.
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