Natural Selection and a Changing Environment

Which color variation of beetles was initially more frequent in the population?

• Green

• Red

• Brown

• Gray

What environmental event caused the gray beetles to have an advantage?

• A flood

• An earthquake

• A drought

• A forest fire

What is likely to happen to the frequency of gray beetles if the environment remains ashy?

• Increase

• Become extinct

• Decrease

• Stay the same

What could cause the green beetles to regain an advantage?

• More forest fires

• Regrowth of green grass

• Continued ash cover

• More gray beetles

Why is genetic diversity important in a population?

• It helps some individuals adapt to changes.

• It makes the beetles more visible to predators.

• It ensures all beetles are the same.

• It decreases the population's survival chances.