what is global warming?
49 Views|Posted 2011-03-28 19:51:44
Asked by Ramesh
1 Answer
Answered by
2011-03-28 21:16:54
Dear Creator,
Global warming is the increase in the average temperature of Earth's near-surface air and oceans since the mid-20th century and its projected continuation. Most of the observed temperature increase since the middle of the 20th century has been caused by increasing concentrations of g
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