What does the reproductive system control?

sex and sperm and how much egg you can have

Explanation:

why ask this ques??

introduction of a drug directly into the respiratory tract is a form of inhalation administration.

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.