Introduction of contaminants into the natural environment that cause adverse change. In other words pollution means a sudden change in the environment due to harmful chemicals released to the environment.
Introduction of contaminants into the natural environment that cause adverse change
The introduction by man into the environment of substances or energy liable to cause hazards to human health, harm to living resources and ecological systems, damage to structure or amenity, or interference with legitimate uses of the environment.
Physical contamination, now especially the contamination of the environment by harmful substances, or by disruptive levels of noise, light etc.