In future no trees would be human world.
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The growth of technologies has increased rapidly. it has greatly affected our mother nature . if it is not controlled , it can lead to many disasters in future.
1. there will be no more trees 
2. natural resources will come to an end 
3.long-term changes in climatic condition 
4. as no trees will be there , so animal and human species will come to an end 

                       i hope it might help u 
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