Environmental change that triggers a definite action on the part of the organism serves as a(n) . effector response stimulus

lol idk man i guess u gotta ask bill nye the science guy

i think it is true since you can test the answer and can use observations to complete it.

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.

the answer is 0.42 is that is an option. this question provides no info