Natural gas is very common in the united states. natural gas forms in processes taking thousands of years. so, natural gas is

not sure but try c two haploid cells

explanation:

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.