Global Warming

Global warming is the term used to describe a gradual increase in the average temperature of the Earth's atmosphere and its oceans, a change that is believed to be permanently changing the Earth's climate. - 2017

What causes global warming? 

Carbon dioxide and other air pollution that is collecting in the atmosphere like a thickening blanket, trapping the sun's heat and causing the planet to warm up.

The effects of Global warming are the environmental and social changes caused (directly or indirectly) by human emissions of greenhouse gases.  

 

Is the earth really getting hotter?

Yes.  

  • Although local temperatures fluctuate naturally, over the past 50 years the average global temperature has increased at the fastest rate in recorded history.

  • And experts think the trend is accelerating: the 10 hottest years on record have all occurred since 1990.

  • Scientists say that unless we curb global warming emissions, average U.S. temperatures could be 3 to 9 degrees higher by the end of the century.

  • http://www.nrdc.org/globalwarming/f101.asp#1

 What is greenhouse gas?

Picture above: https://en.wikipedia.org/wiki/Effects_of_global_warming

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