Acid rain 2
Rain is one of the most essential ingredients for all life on Earth to survive.
Although rain is naturally acidic, it has been increased acidified by pollution from
homes, factories, power stations and cars. Acid rain occurred in the last twenty to
thirty years; it is not only cause the environment issue but also harmful human,
animals, and agriculture.
What is Acid Rain?
Acid rain is a result of air pollution. When any type of fuel is burnt it produce
lots of different chemicals. The fumes that come out of a car exhaust and the smoke
that comes from a fire do not just contain the sooty grey particles, they also contains
lots of invisible gases that can be even more harmful to our environment.
Acid rain, by definition, is acid rain. The correct name should be "acid
deposition", which can be divided into "wet deposition" and "dry deposition," two
categories, the former refers to all gaseous pollutants or particulate pollutants, with
the rain, snow, fog or such as precipitation patterns and hail fell on the ground, the
latter refers to the days without rain, down from the air, carried by the fallout in terms
of acidic substances. In chemically defined water pH (pH) value is equal to seven is
neutral, less than it is acidic. Naturally contains large amounts of carbon dioxide in
the atmosphere, carbon dioxide, when dissolved in water at room temperature and
reach liquid in equilibrium, the pH of rainwater is about 5.6, so nature is acid rain.
However, in nature, there are still other acid-causing substances, such as hydrogen
sulfide emitted by volcanic eruptions, the oceans release of dimethyl sulfide, high-
altitude lightning caused by the nitrogen oxides, etc., will further acidification of rain,