They are often targets because they don't fight back, they often provoke their aggressor.
Answer:
B: A rain storm
Explanation:
A rainstorm will help plants grow.
The digestive system helps the body maintain equilibrium by providing nutrients to the body and ensuring factors like blood sugars are maintained.
The endocrine system also uses antagonistic hormones (such as insulin and glucagon) to maintain body homeostasis.
the excretory system maintains homeostasis