The convention on International Trade in Endangered Species of Wild Fauna and Flora ( CITES) and the Convention on Biological Diversity are examples of a. organizations that promote poaching

b. polls measuring American opinion about biodiversity

c. treaties to protect biodiversity

d. laws to increase the number of species

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.