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With the
 development
of society, the air pollution in our city is very
serious. Exhaust gas of automobile, airplane, ship,
plant caused the severe air pollution. In order to know
the cause of air pollution, we began to find information
on the Internet, books and newspapers.
In order to
make our materials more accurately, we interviewed our
school geography teacher, Miss Guo told us emissions
from factories, cars, planes, ships, residents stove
contains a lot of harmful substances, which is the main
pollution source of air. Air pollution does great harm
to people. Smoke, harmful substances in waste gas can
stimulate the human eye, leading to eye inflammation;
these harmful substances can stimulate trachea, lung of
the human, make people cough, asthma, and even get lung
cancer. |
