when classifying chemical reactions and balancing them when do the charges of the ions change and when do they not for one type of chemical reaction

they both have a y in them

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.

pv=nrt

explanation: