What mechanism of evolution becomes more powerful as population size lowers?

Genetic drift

Explanation: Genetic drift is a device of evolution in which allele frequency of a population change over generations due to chance. Genetic drift occurs in all populations of non-infinite size, but its consequences are strongest in small populations. Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. It can also cause initially rare alleles to become much more frequent and even fixed.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

mammals. mammals of the piedmont region live in several habitats such as wetlands, fields and forests. raccoons live across the state including the piedmont. they've adapted to environmental changes, including the loss of natural habitat.