a piece of metal with a mass of 121 g is placed in a 50 ml graduated cylinder. the water level rises from 20. ml to 35 ml. what is the density of the metal?

8.067 g/cm^3

Explanation:

Density = Mass/Volume

where mass = 121g and

Volume = (35 - 20) = 15ml

where 1ml = 1cm^3

So Density = 121/15

;Density = 8.067 g/cm^3

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.