I would have to say decomposes. they play a big part in putting the nitrogen back in the earth so that it can continue the processes.
Organ, in biology, a group of tissues in a living organism that have been adapted to perform a specific function
Amino acids because here are 29 amino acids in the proteins you eat and in the molecules in your body and they are linked together to form large protein molecules
Oxygen
Oxygen
Carbon dioxide
Monoxide
I hope I helped
