Propane burns in air to produce carbon dioxide and water. What is this type of chemical reaction called? synthesis combustion decomposition single replacement

combustion

Explanation:

a combustion reaction will most likely have the products carbon dioxide and water.

this reaction will also have oxygen as one of the reactants

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.