Which of the following best describes the function of the nucleus? The nucleus controls the cell and contains DNA.

The nucleus transports materials inside the cell.

The nucleus holds the parts of the cell together.

The nucleus stores materials like food and waste.

A

Explanation:

the nucleus has all the information about the cell and has the DNA

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.