What is Global Warming? Discuss any two Harmful Effects of Burning fuel in Environment.
36- (i) Describe the process of formation of coal.
(ii) What is meant by non contact force?
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Global warming is a rise in the overall temperature of the earth's surface. This leads to the melting of polar caps and rise in the sea level and further results in flooding of coastal regions. Burning of coal and diesel releases sulphur dioxide gas.
36)(I) Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. ... Some iron and steel making and other industrial processes burn coal. The extraction and use of coal causes many premature deaths and much illness.
(II) Non-contact forces are forces that act between two objects that are not physically touching each other.
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