C. It can be considered a global ecosystem
It can honestly be all of the above ..
Answer:
The soil air is responsible for influencing the availability of many nutrients. Soil air is also by many of the microorganisms that release plant nutrients to the soil. The soil air can fill soil pores as water drains or is removed from a soil pore by evaporation or root absorption.
Explanation:
All life is based on the chemical element cabon. It is essential to life.
