These Facts Will Help You Understand Global Warming

According to Wikipedia, global warming is "the observed increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation."
Many observations indicate that global warming has taken place during the 20th century. This has resulted in an increase of the average surface temperature, a decrease in the snow cover and ice extent, and a rise in the sea level. The amount of precipitation, the amount of cloud cover, and the presence of

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