Question

unit review - evolution of populations
when environmental conditions changed due to pollution, what happened to the peppered moth population?
the fitness of the black moths increased and caused the population of moths to become mostly black.
the fitness of both light and black moths decreased until all moths became extinct.
nothing happened to the moth population.

Explanation:

Pollution darkened tree - trunks. Dark moths had better camouflage, higher fitness, and became more prevalent.

Answer:

The fitness of the black moths increased and caused the population of moths to become mostly black.