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Greenhouse Effect and Its Implication on Global Warming

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Greenhouse Effect and its Implication on Global Warming
Greenhouse effect refers to an atmospheric process by which short wavelenghts of the visible light from the sun pass through the atmosphere where they are absorbed or trapped. However, part of light emitted from the sun in form of longwave is re-radiated from heated obects on the earth’s surface in to the atmosphere. Presence of greenhouse gases in the atmosphere does not allow the radiations to pass through. The greenhouse gas moelecules are more complex than any air molecule and their structure has high heat absorption capacity. The heat radiated back to the earth’s surface to modulate its temperature (Davis, 9). According to Parsons (23), this process is essential in order to support life. if this does not occur, the temperatues on the earth surcface would be below frezing point and plant or animal life would be supported. however, human activtities in the past centuries have increased the concentration of greenhouse gases in the atmosphere which inturn have increased the average temperature on the earth’s surface.
Greenhouse gases include water vapor, caborndixoide, nitrous oxide and methane. Acording to a report released by IPCC in 2007, there was a significant increase in production of greenhouse gases between the 19th and 20th century (Davis, 11). Increase in population has led to increased transportation and manufacturing. This implies rise in the combustion of fossil fuels including oil, gas and coal. Combustion of fossil fuels leads to emission of, among others, carbon dioxide into the atmosphere and this account for over 80% of the Carbon dioxide emission (Alastair, 77). Parsons (25) notes that the gases produced are more stable that stay very long in the atmosphere. Deforestation is a human activity which involves cutting down of trees. Major causes of deforestation include human

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