Soil air supplies plants and microorganisms with the gases oxygen and which are needed for life processes. (two words)

Carbon Dioxide

Explanation: Soil aeration is the process that provides the air to the plants and maintains the flow of oxygen and carbon dioxide gases. These are the two most vital gases for the life process of the soil to provide it to the plants and other micro organisms. It provides these gases so that there can be production in the plant through soil.

answer; creep;