Tuesday, June 9, 2009

WHAT IS MEANT BY AIR POLLUTION?






Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or damages the natural environment, into the atmosphere.

The atmosphere is a complex, dynamic natural gaseous system that is essential to support life on planet Earth. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the Earth's ecosystems
SOURCEhttp://images.google.co.in/images?hl=en&um=1&q=PHOTOS+OF+AIRPOLLUTION&sa=N&start=40&ndsp=20

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