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However, it's getting warmer 
now. The number of wild animals gets much smaller. Natural disasters happen more often 
than before.
      Why do these happen? First, there are more and more people on the earth. Second, 
people kill too many wild animals and cut down a lot of forests.
     What can we do? I think everybody can do something to help save the earth. We should 
stop people killing wild animals. We can also plant more trees and build more reserves.
      I hope our earth will become a better place for us to live.
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