Answer:
B. The population must be very large.
Explanation:
Answer:
The invention of the electron microscope allowed them to see organelles and other structures smaller than cells. There is variation in cells, but all cells have a plasma membrane, cytoplasm, ribosomes, and DNA. These similarities show that all life on Earth has a common ancestor in the distant past
I’m not sure but it might be the third one
Answer: Reproduction. One must reproduce in order to continue the generational line.
