Global warming is the gradual increase in global temperatures
caused by the emission of gases that keep the sun heat in the
earth. Gases that cause to global warming include
carbon dioxide, methane, nitrous oxides, chlorofluorocarbons (CFCs),
and halocarbons (the replacements for CFCs). The carbon dioxide
emissions are usually cause by the use of fossil fuels for energy.
The gradual rise of the earth's surface temperature also be caused
by the greenhouse effect and responsible for changes in global
climate .
In the past they thought global warming caused by natural influence,
but now they know the mean cause is the carbon emission and
greenhouses.
caused by the emission of gases that keep the sun heat in the
earth. Gases that cause to global warming include
carbon dioxide, methane, nitrous oxides, chlorofluorocarbons (CFCs),
and halocarbons (the replacements for CFCs). The carbon dioxide
emissions are usually cause by the use of fossil fuels for energy.
The gradual rise of the earth's surface temperature also be caused
by the greenhouse effect and responsible for changes in global
climate .
In the past they thought global warming caused by natural influence,
but now they know the mean cause is the carbon emission and
greenhouses.
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