In preparation for a blizzard, a city dispatches a crew to spread salt on the street surface of the bridges around town . the salt is spread on the streets because it will likey change the freezing point of water from to .
a.0*c to 5*c
b.0*c to -5*c
c.0*c to 32*c
d.32*c to 27*c

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.