limited resources. natural selection. geographic isolation. climate change.
I gave my students this multiple choice question: A cricket population includes approximately the same number of black and light-brown crickets. Black crickets are easier for birds to locate and eat. Over time, the population begins to consist of only light-brown crickets. The change in the color of the cricket population is a result of

Only one answer is correct among these 4 choices:
- limited resources.
- natural selection.
- geographic isolation.
- climate change.

Could you tell me which one is correct?

natural selection.