Answer:
the answer is U shaped valley
An organelle is a specialized structure inside Eukaryotic cells.
Answer: population density
Explanation:
Answer: <em>The Bottleneck Effect</em>
Explanation:
A Bottleneck effect is the sharp reduction of numbers of a population through environmental effects or human activity. It causes a loss of the genetic pool and its variety; genetic variation lowers and increases with time as random mutations occur.
