Thursday, October 30, 2014

Climate change

climate change is an environmental problem that
 statistical properties of the climate system when considered over long periods of time, regardless of cause.Accordingly, fluctuations over periods shorter than a few decades, do not represent climate change.
The term sometimes is used to refer specifically to climate change caused by human activity, as opposed to changes in climate that may have resulted as part of Earth's natural processes. In this sense, especially in the context of environmental policy, the term climate change has become synonymous with anthropogenic global warming. Within scientific journals, global warming refers to surface temperature increases while climate change includes global warming and everything else that increasing greenhouse gas levels will affect.

 causes:
-solar radiation
-reflectivity of the continents and oceans
-continental drift and changes in greenhouse gas concentrations.
-melting of ice caps
-volcanic ash, forest fires


Effects:
-acid rain
-soot and smog
-flooding
-difference in sea level
-health problems





source: wikipedia.org

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