How
wide-ranging effects happen to pollution
Many
people think of air, water, and soil pollution as distinctly separate forms of pollution.
However, each part of the global ecosystem - air,water, and soil - depends upon
the others, and upon the plants and animals living within the environment.Thus,
pollution that might appear to affect only one part of the environment is also
likely to affect other parts.
For
example, the emission of vehicle exhausts or acid gases from a power plant
might
appear to harm only the surrounding atmosphere. But once released into the air
they are carried by the prevailing winds, often for several hundred kilometres,
before being deposited as acid rain. This can produce an enormous range of adverse
effects across a very large area, for example: increased acidity levels in lakes
and rivers are harmful to fish stocks and other aquatic life;physical damage to
trees and other vegetation results in widespread destruction of forest areas; increased
acidity of soils reduces the range of crops that can be grown, as well as decreasing
production levels; rocks such as limestone, both in the natural landscape and
in buildings, are eroded - the effect of acid rain on some of the world's most
important architectural structures is having disastrous consequences.
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