gives the precise time an event occurred, not just the order of events. A) none of the following
B) absolute age
C) relative age
D) a fossil index

answer; the correct answer is (beta)

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.