Communicate with the body to ensure homeostasis.
feedback loops
cells
enzymes
plasma membrane

Feedback loops communicate with the body to ensure homeostasis. Feedback loops can be either positive, which heal your body, or negative, which revert your body to its previous state. Homeostasis is the equilibrium in your body. Enzymes, cells, and plasma membrane do not have the ability to communicate with a person's body in such a manner.

D) Increased biodiversity would not be a possible reason because that would lead to more food sources and mates and other things that would actually make the habitat better.