Greenhouse
effect means rise of atmospheric temperature around the world. It is the gradual
warming of the air around the earth as a result of heat being trapped by
environmental pollution. It has been reported that the world's climate is
changing significantly. The world temperature is increasing day by day.
Carbondioxide is the main cause of greenhouse effect. Pollutants such as
methane and chlorofluorocarbons also contribute to this increase. Deforestation
around the world, increasing number of vehicles on the roads, burning down of
tropical rain forests, rapid growth of industry, burning of wood and oil etc.
are increasing the amount of carbondioxide. The effects of greenhouse are
serious and dangerous. It has been predicted that by the mid way through the
next century temperatures may have risen as much as 4ᴼC. This will greatly
reduce mankind's ability to grow food and damage wildlife and wilderness. As a
result of global warming, the ice in the Polar Regions is melting. This may
raise the sea level of water and flood coastal areas. So, farmland will go
under water. The alarming news for Bangladesh is that the lower southern part
of the country may one day go under water. At present the greenhouse effect has
become a matter of great concern for the world. Some measures should be taken
immediately to stop it. The sources of greenhouse gases such as carbondioxide
and carbonmonoxide should be brought under control. We should plant more trees
as trees absorb carbondioxide which is the main cause of greenhouse effect.
Worldwide tree plantation programme should be strengthened. We must not burn and
destroy forestland. Old vehicles must not be allowed to ply on the roads. The
most important thing is to raise public awareness in this regard.
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