A chemist is studying an unknown substance. He can break it into its elemental components only by using chemical means
Based on this observation, how should the unknown substance be classified?
A impure substance
B Solution
C mixture
D pure substance

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.

answerleaving cheese out to get moldy;