Half of the polar bears in a small population die. this population may experience changes due to gene flow mutation genetic drift natural selection

Correct Genetic Drift

Genetic drift is defined as the random change in the allele frequency of a population is changed by chance or due to random changes in the environment. It is a random process that can lead to large changes in the overall population in a short period of time. It is a mechanism of evolution and it does produce the adaptation.

Hence, the correct answer would be genetic drift.

answer; i believe that the correct answer is (light);

oak trees? ? what was listed