dhruvi viib
Post on 20-Jul-2015
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MADE BY :- DHRUVI AISHWARYA
AISHI SNEHA
ISHWARINISHA
THE SUBSTANCE WHICH CONTAMINATE
THE AIR ARE CALLED AIR POLLUTANTS
SOMETIMES SUCH SUBSTANCE CAN
COME FROM NATURAL SCOURCES
SOMETIMES AIR GETS POLLUTED BUT
HUMANS
NATURE HUMANS
ACID RAIN
GLOBAL WARMING
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