10 The book will serve as a flat surface on which you
will later place additional weights. It has its own
mass, which you need to measure,
Zero the balance. Place the book on the balance.
Measure the mass to the nearest gram (1 g).
g

497.680g 270

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.

answer///carbon;