As you can see, bacteria maintain homeostasis in an ecosystem by decomposing dead organisms so that the nutrients can continue to be recycled. Another example of how bacteria maintain balance is their presence in the digestive system of certain animals.

Does viruses maintain homeostasis?

Viruses have no way to control their internal environment and they do not maintain their own homeostasis.

Do all organisms maintain homeostasis?

All living things are able to maintain a constant internal environment through homeostasis. All living things have complex chemistry.