What’s air, water, and soils role in the carbon cycle

They are reservoirs of carbon in the carbon cycle.

Explanation:

A biogeochemical or nutrient cycle has two major components:

Air is a reservoir of largely inorganic carbon (as carbon dioxide) while water and soils are reservoirs of both organic (e.g. dead decomposing organisms and hydrocarbons) and inorganic forms of carbon (e.g. carbon-containing minerals such as limestone, calcium carbonate).