Which letters represent physical weathering, biological weathering, and chemical weathering.
(hint: there will be one without an answer.)

it's unlikely a majority of a large population would agree on issues

hope this : )

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.