Which natural occurrence is an example of a long-term environmental change?

O Lightning sparks a forest fire.

O An earthquake results in a tsunami.

O A river floods due to a strong thunderstorm.

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

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

Explanation:

Long-term environmental change is something that does not happen immediately, but it does happen over time. Among the options given in the question above, the first three do not correspond to long-term environmental changes because they are changes that occur immediately after a stimulus. However, a situation where the peppered moth evolves from a light to a dark color is a long-term environmental change, which occurs over time and increases in pollution, which gradually changes the color of the moth.

The answer is D because it is the only example that takes place over a long period of time.