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Subject: air polution
Replies: 2 Views: 421

nature07 2.05.12 - 11:43am
the high gained countrys are spray a huge cemical smoke.it is harmfull for atmosphier.it is spoiling the ojon level. *

nature07 2.05.12 - 11:46am
and it is the main cause of global worming. *

nature07 2.05.12 - 11:49am
Devloped countries have to pay for it.they have fiter the cemicaled smoke and dust. *

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