Question

what are the main components of air as a gas solution?
nitrogen, oxygen, and carbon dioxide
oxygen and carbon dioxide
hydrogen and helium
methane and nitrogen

Explanation:

Air is a gas solution. The main components of air are nitrogen (about 78%), oxygen (about 21%), and small amounts of carbon dioxide (about 0.04%). Hydrogen, helium, methane are present in very trace amounts in air.

Answer:

Nitrogen, oxygen, and carbon dioxide.