Marie also expected carbon dioxide to be formed in this environment. i) In carbon dioxide, what element is combined with carbon? ii) Where, apart from the air, did this element come from in this experiment?​

b. examine and describe cells

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.