Global
warming
Introduction:
1.
Global warming was the most serious
problems in the world.
2.
Many diseases will spread more quickly
in a warm environment, such as AIDS, HPAI and SARS.
3.
Humans are the biggest reason that
causes global warming.
Body I:
Global warming has a
large effect on agriculture which is necessary to support of human life.
Body II:
There is no doubt that
transportation has greatly contributed to global warming.
1.
Carss will
produce large amounts of chemical gas.
2.
Carbon
dioxide creates a series of reactions.
3.
Refrigerators
and air conditioners need a substance called Freon.
Body III:
Deforestation is a controversial reason causing the global warming.
1. 25 and 30 percent of the greenhouse gases released
into the atmosphere each year -1.6 billion tons - is caused by deforestation.
2. Trees can be used to burn for house heating.
Conclusion:
As far as I am concerned,
global warming is the necessary part of economic development, but it is not
taken seriously nowadays. This is human caused and has serious consequences.
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