They can see insects that light up at night. Their bodies lose less water in the cool night air. They are able to find more plant food by moonlight. Their bodies absorb sunlight in the daytime while they sleep.
I gave my students this multiple choice question: Many desert animals are only active at night. How does being active only at night most help them survive in a hot desert climate?

Only one answer is correct among these 4 choices:
- They can see insects that light up at night.
- Their bodies lose less water in the cool night air.
- They are able to find more plant food by moonlight.
- Their bodies absorb sunlight in the daytime while they sleep.

Could you tell me which one is correct?

Their bodies lose less water in the cool night air.