Answer:
Genetic drift happens when its adapted organisms survive and reproduce more often than poorly-adapted organisms
1. differential reproduction, that is, not all organisms are able to reproduce to their fullest capacity because nature cannot simply sustain it
2. acquire genes that is heredity.
2nd option, Genetic variation will increase because of a new habitat and food source
Tons of food (rodents) and they would have no competition for the rodents in the new habitat