<span>D) tightly packed electrons</span>
Answer:
D. cell is the smallest part of an organism.
as cell is basic functional and structure of life.
"When exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce" is the one example that <span>illustrates Darwin's main contribution to the theory of evolution. The correct option among all the options that are given in the question is the third option or option "C". I hope it helps you.</span>
Answer:
D
Explanation:
The atmosphere is not an eycosystem
