A simplified carbon cycle is depicted here. The release of carbon dioxide into the atmosphere can contribute to global warming. Which statements describe the processes of forest fires, fossil fuel combustion, and plant respiration? Select ALL that apply.
A)
They occur under anaerobic conditions primarily.
B)
They are all directly caused by human intervention
They are primarily the result of microbial activity.
Eliminate
D)
They all occur in the presence of oxygen to release carbon dioxide.
E)
They each convert organic carbon-based molecules into carbon dioxide.