Which of the following is an example of genetic drift?

an earthquake kills 90 percent of the green beetles in a population of green, brown, and black beetles.
a green beetle travels from its population into a new population of entirely brown and black beetles.
green beetles have better camouflage than brown and black beetles and are not eaten as often by predators.
warm temperatures causes green, brown, and black beetles to start reproducing earlier than normal.

An earthquake kills 90 percent of the green beetles in a population of green, brown, and black beetles.

Explanation:

Genetic drift is one of the evolutionary agents and causes changes in allele frequency of the gene pool of the population by a change event. it does not involve any gene flow or natural selection. Among the given examples, the death of 90% green beetles by an earthquake leading to reduced frequency of the green allele in the gene pool is an example of genetic drift.

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation:

i think that c)gold was found there

but i am not sure