In the late 1900s researchers realized that the world may be getting warmer. The last two decades of the 1900Ã¢â‚¬â„¢s witnessed some warm and cool years. However, not enough evidences were available to support the theory of global warming. But this well-known fact that accumulation of several green house gases can lead to a rise in temperature (global warming). If a global warming phenomenon sets in this would result in major changes in worldÃ¢â‚¬â„¢s climate. The increase in temperature might lead melting of snow on poles, which would terrifically add, to ocean waters. Hence the level of seas, and oceans would rise; this would largely affect the coastal areas. These would submerge under coastal Waters due to expansion of seas and oceans.
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