The answer is an overhunting.
<span>The bottleneck event means drastic reduction of the population size because of environment changes. The consequence of this is the reduction of genetic variation. The bison population is a good example of the population bottleneck. The bison population drastically reduced its size due to overhunting which culminated at the end of the 19th century, when bisons almost extinct. </span>
i know for a fact that my answer is not good and will not help
<span>The complete statement is this: 'An increase in food and a decrease in predators would most likely increase genetic variation in a population. An increase in available food is an environmental factor which brings about genetic variation in the population of a specie.</span><span />
Answer:
D. The amount of sulfur emitted by a smokestack before and after the scrubber is attached
