the importance of trees : Trees are the life line for our civilization . Without them we can't breath, we can't get food, we will die with hunger and suffocation . Trees give us Oxygen . The one of the most important gas of the earth . Every animal inhale the oxygen and exhale the carbon dieoxyed . Carbon dioxide's is a toxic gas for the animal's . If we inhale the CO2 for only 15 minutes we probably die . But the trees absorb the carbon dioxide and release oxygen . The pure oxygen . But everybody doesn't know that . People cut down trees without any hesitation . Nowadays pollution is rising . The greatest weapon to fight pollution is trees . Trees are also help full with the rain fall . Means the deserted areas needs tree plantation more .
The countries who needed trees more : the world's most polluted countries needs trees more then any of the nations . The south Asian region is more polluted then the rest of the world . The top six most polluted cities are mostly from Asia . Here is the top six most polluted cities :
1)Baghdad , Iraq
2)Kolkata , India
3) Dhaka , Bangladesh
4) Lahore , Pakistan
5) Delhi , India
6) Mumbai , India
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