What would happen if the Earth had no atmosphere?
A. Very hot days and very cold nights
B. Very cold days and very hot nights
C. Earth would not have days
D. Earth would not have nights

catya that's not even a b or c

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.