By acting as decomposers on dead plants and animal
Answer:
Homeostasis is the regulation of bodily functions to stay within a certain range.
Answer:
The digestive system works very closely with the circulatory system to get the absorbed nutrients distributed through your body. ... While the digestive system collects and removes undigested solids, the excretory system filters compounds from the blood stream and collects them in urine.
A Microorganism which can also be known as a Microbe or Microscopic organism
If those are the only answers i would say mutualism