I could be wrong here but I think factories and animals are 2 ways carbon gets into the air because animals breath out carbon, while factories pollute the air with carbon. If anything I would think plants are responsible for removing it because they give out oxygen.
Stores energy within the body also in animals it is to store energy
Fungi is used to make penicillin, streptomycin, chloramhenicol, and tetracycline. Foods that are made from fungi are bread, cereal, chocolate, soy sauce, and many more.
