Answer: D. a genetic bottleneck
Explanation:
A genetic bottleneck also known as a population bottleneck is one that describes a sharp reduction in the size of a population caused by environmental events like in the above or caused by human activities.
Answer:
False.
Explanation:
Mars is the planet we are most likely to colonise due to the signs that there may have been some sort of life there before.
The answer is the <span>Immune system</span>
