What role do plants have in the movement of water through the water cycle? A plants release water into the air through there leaves
B. plants move water into the ocean
C. plants condense water into the clouds
D. plants realease water into the air through there roots

where's the diagram?

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.