C is the answer im pretty sure its right
Model organisms is your answer
Hope this helps : )
Microorganisms and humans both have a huge impact on soil health.
Microorganisms can poison the soil or they can help restore soil to a healthy state. Humans, and their use of the land (mining, recreation, pollution, etc) can have significant effects on soil health.
Hey i’m willing to help! but i’m confused on what you’d like me to answer. please specify. :)