Answer: Global warning is one of the most talked topics of the present world. There are many reasons of global warming around the world and it has disastrous effects on us. Greenhouse effect is the main cause of global warming. The rise in the atmospheric temperature is known as greenhouse effect. Our atmosphere is guarded by an ozone layer which resists the entrance of ultra-violet rays from the sun. But deforestation around us and the increased amount of carbon dioxide, methane and chloro fluoro carbons affect that layer. The heat of the sun enters directly into the atmosphere of the earth. Scientists are worried about this increased heat because it is melting the ice in the polar-regions. If this process continues for a long time, the layer of water in the oceans will rise and flood coastal areas and farm lands of Bangladesh. Besides, this will reduce mankind's ability to grow food, destroy or severely damage wild life and wilderness. So, greenhouse effect is the main cause of global warming along with deforestation and rise of CFC gas. So, in order to solve this problem we have to prevent or reduce the amount of emission of greenhouse gases. We should give it the highest importance to save the world.
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