The answer is pollution. It is the introduction
of noxious
waste into the natural environment that cause adversative transformation. Pollution
can take the form of chemical substances or energy, such as
noise, heat or light. Pollutants, the components of pollution, can be either
foreign substances or energies or naturally occurring contaminants but the
majority of human activities causes the different kinds of pollution especially
air pollutions. For instance, increased fossil fuel incineration from
motor automobiles, industrial factories and power plants all propel
large quantities of air pollutants, such as carbon monoxide, ozone and nitrous
oxides, into the atmosphere.
