Question

The bottleneck event that decimated the bison was caused by _______. a. overhunting b. climate change c. disease d. habitat destruction

Answer 1

I think the answer is A. Usually people hunt bison so i think over hunting is whats causing the decimated of the bison.

Answer 2

Overhunting

Step-by-step explanation:

• if any environmental or human activity leads to a drastic decline in the population of individuals then such an event is known as a population bottleneck.
• In the case of bison, overhunting (human activity) led to a bottleneck event.
• Overhunting decreased the population of bison to such an extent that it faced the threat of extinction, however, due to regulations its population has recovered.
• However, since the new population recovers from a small group of individuals left due to the bottleneck effect, the genetic variability is greatly reduced.