When 12.36g of calcium trioxo carbonate (iv) was added to excess dilute hydrochloric acid carbon (iv) oxide was evolved. the entire reaction took 7 minutes. calculate the rate of reaction?

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.

it has both hydrogen and oxygen