In two not more complete sentences explain how to balance the chemical equation,

ca+n2> ca3+n2 and include all steps.

h_y__ce n2 mg ch2 s2 co2 co3

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.