Which of the following describes an exothermic reaction?
O
A. AHI, reactants = 0
O
B. AHf, reactants = AHf, products
O
C. A He, reactants > AHf, products
O
D. A He, reactants < AH, products

the answer is option D

Explanation:

exothermic reaction takes place when the energy required to break the bonds in the reactants is less than the energy released when new bonds are formed in the products.

a chemical reaction

explanation:

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.