The answer that would best complete the given statement above is the term NICHE. Each specie has a role in an ecosystem to make it balanced. And an example of this is when s<span>mall monkeys and squirrels both eat nuts and live in tree tops. Hope this answers your question.</span>
There are 4 thing that need to happen for natural selection to occur:
1) reproduction
2)heredity
3)variation in fitness or organisms
4)variation in individual characters of the population.
Answer:
B. ATP
Explanation:
The ATP is the type of useful energy that the cells need.
