Of the gases listed, nitrogen, oxygen, water vapor, carbon dioxide, methane, nitrous oxide, and ozone are extremely important to the health of the Earth's biosphere. The table indicates that nitrogen and oxygen are the main components of the atmosphere by volume.
so the answer is D. Nitrogen and oxygen
hope this helps!
The number 6.022 × 1023 indicating the number of atoms or molecules in a mole of any substance
Atoms are composed of electrons in a cloud around a positive nucleus.
