Reviewing the procedure, indicate where careless work could contribute to the error source you identified in the question above. Select all that apply. Calculation errors Using dirty (or leaving fingerprints on) cuvettes Not completely rinsing the excess chromate from the prepared Ag2CrO4 solid. Miscalibration that spectrometer Preparing calibration standards improperly

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.

answer: gold foil experiment - he shot alpha particles at a gold foil

explanation: