Which two pieces of evidence support the conclusion that the total amount of energy in a closed system remains the same? The car's engine makes sounds as it runs.

The car remains full of gasoline if its engine stays off.

The car's engine gets hot as it burns gasoline.

The car uses more gasoline as it goes faster.

A,C

Explanation:

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.