Hydrocarbons that have one or more double or triple bonds are a. unsaturated b. saturated c. aromatic d. substituted

A. unsaturated

Explanation:

Saturated hydrocarbons are defined as the hydrocarbons in which a single bond is present between carbon and carbon atoms. The general formula for these hydrocarbons is

Unsaturated hydrocarbons are defined as the hydrocarbons which have double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is and

Aromatic hydrocarbons are those hydrocarbons in which Huckel's rule is obeyed. Example: Benzene

Substituted hydrocarbons are those hydrocarbons in which hydrogen is replaced by some other element. Example:

the product of the pressure and volume is also constant

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.