Deforestation is the process of destroying or removing a forest ecosystem.
During the denitrification process nitrates are converted to another form.
The process of desalinization occurs when salts dissolved in sea water or brackish water are removed.
Desertification is the expansion of desert lands into previously non-desert areas.
Toxic substances that enter the natural environment are often changed into another form through the process of detoxification.
Emissions are created when humans or natural forces release chemicals or other substances into the environment.
When the environment becomes less
valuable or damaged, environmental degradation is said to occur.
The process of erosion occurs when the surface of the land is worn away and lost.
Natural causes have always been a source of extinction, but many human processes have intensified the rate at which extinction occurs.