Which part of the earth system contains the air we breathe?

a.

hydrosphere

b.

atmosphere

c.

magnetosphere

d.

lithosphere

the correct answer is ( hypoglycemia ); good luck

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.