Which of the following statements is true?
a- reactors for nuclear fusion are much more realistic than our reactors for nuclear fission
b- nuclear fusion involves the splitting of a nucleus; nuclear fission involves combining two or more nuclei
c- nuclear fusion produces much more energy than nuclear fission
d- nuclear fusion requires enough fissionable material present to create and sustain a chain reaction

i believe it is c.) 1575 j.

6.4 cm (max) - 25 cm (min)

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.