Question

which natural occurrence is an example of a long - term environmental change?
lightning sparks a forest fire.
an earthquake results in a tsunami.
a river floods due to a strong thunderstorm.
the peppered moth evolves from a light to a dark color.

Explanation:

Lightning - sparked forest fires, earthquake - caused tsunamis, and thunderstorm - induced river floods are short - term events. The evolution of the peppered moth from light to dark color is a long - term environmental change as it occurs over many generations due to changes in the environment like industrial pollution.

Answer:

The peppered moth evolves from a light to a dark color.