Garbage and its functions

Waste is an undesirable waste material after the end of a process. Waste is defined by humans according to degrees of exposure, in natural processes there is no concept of waste, only the products produced after and during the natural process take place. But because in human life defined the concept of the environment then the garbage can be divided by the types.Waste is a waste material from animals, humans, and plants that are not used anymore and released into nature in the form of solid, liquid or gas.***
***
***