Your Question is a run on, please fix it and I will answer.
Saprobes
logs and leaves
Saprobes
weathering
waethering.
The process is called denitrification.
binary fission it is the process by which the bacteria divides
This is usually called cracking; It produces unsaturated hydrocarbons as well as smaller alkanes.
A substance that naturally decomposes into harmless materials is called?
The process is called conjugation.
The process you have mentioned is called nitrogen fixation. It is done by bacteria named Rhizobium Bacillus.
Binary fission