Parents Long stems x short stems
Red flowers x white flowers Green pods x yellow pods Round seeds x wrinkled seeds Yellow seeds x green seeds
First Generation
All long All red All green All round All yellow
Second Generation
787 long; 277 short
1705 red; 224 white
428 green; 152 yellow 5474 round; 1850 wrinkled 6022 yellow; 2001 green

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

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.