Decomposition.
decomposition
Decompostion
producers
Decomposition
It is important for the breakdown of materials
Organisms that break down waste and dead organisms are called decomposers.
Weathering is the process that involves the physical or chemical breakdown of Earth materials. Physical weathering involves the mechanical breakdown of rocks into smaller pieces, while chemical weathering involves the breakdown of minerals in rocks through chemical reactions with water, air, or other substances.
Refrigeration slows down the breakdown of organic materials.
enzymes or letter C
Fungi and bacteria.
If by marsh, you mean the environment in general, then the animal that eats that is a decomposer. Decomposers breakdown bottom level decomposing materials like dead plant and animal material and turn it into renewable energy.
A fallen [dead] tree does not rust. Rust is a term specifically applying to the oxidation of Iron and some compounds of Iron. The breakdown [biodecompositon] of trees and other plant materials is accomplished by the action of living microbial "critters" that eat and digest the plant materials resulting in different compounds.