2. an electric heating element is connected to a 110 v circuit and a current of 3.2 a is flowing though the element. how much energy is used up during a period of 5 hours by the elemets? a. 550 wh b. 2,580 wh c. 352 wh d. 1,760 wh

the role of the microscope world in creating new materials .

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.