are any substances that under
excessive quantity in a wrong
place and a wrong time will
cause impurity to the living
environment. Simply put, they're
the things that cause pollution.
be chemicals, ashes, sediment,
organisms, heat, radiation, etc.
which if exposed to the living
environment will cause bad
this section we will discuss
some of common pollutants exist
today: the characteristics, uses
and effects. Please click below
to learn more: