The Issue Of Global Warming

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The issue of global warming is controversial and there are people claiming that global warming is only a fiction instead of a fact. However, research from scientists found that at the beginning of 2000, unprecedented warming was recorded and the Arctic ice has melted to the lowest levels in the recorded history. Moreover, the sea level has also risen by eight inches since 1870 (“The Scientific Truth about Climate Change”). Although natural forcing mechanisms alone cannot explain the formation of global warming, the increase of greenhouse gases can. Most climate scientists agree that one of the major causes of global warming is the human expansion of the greenhouse effect.
The emission of greenhouse gases like carbon dioxide, methane, and nitrous oxide will trap heat radiating from the earth toward space. Carbon dioxide is a minor but very important component of the atmosphere which blocks heat from escaping. Human activities like deforestation and burning of fossil fuels from coal, natural gas, petrol, and diesel will definitely increase the concentration of greenhouse gases (Shaftel). Since light energy from the sun is emitted in wavelengths shorter than 4,000 nanometers while energy from heat is released in wavelengths longer than 4,000 nanometers, carbon dioxide will absorb part of the heat energy released from the earth but does not let all of the heat energy out (Rohrer).
In addition, methane, a far more active greenhouse gas than carbon dioxide also facilitates

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