You are an astrophysicist studying different phenomena in space. You notice that a particular asteroid is emitting radiation. When you use a spectroscope to test it further you determine that the entire asteroid is composed of nickel and that it is not forming any new elements. What type of radiation is being emitted? A. Delta
B. Gamma
C. Beta
D. Alpha

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.