1. Think about it: Imagine a pocket of air over the land ("land air), and another pocket of air over the ocean ("ocean air)
A. Which air pocket would you expect to
Why?
heat up more during the day?
Why?
B, Which air pocket would you expect to
cool down more at night?

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.