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According to these facts, a conclusion could be drawn that the more effective methods of tapping energy can cause the improvement of living condition; while the better living condition would stimulate the increasing of the population; meanwhile, the larger ...  

According to these facts, a conclusion could be drawn that the more effective methods of tapping energy can cause the improvement of living condition; while the better living condition would stimulate the increasing of the population; meanwhile, the larger ...  

According to these facts, a conclusion could be drawn that the more effective methods of tapping energy can cause the improvement of living condition; while the better living condition would stimulate the increasing of the population; meanwhile, the larger ...  

According to these facts, a conclusion could be drawn that the more effective methods of tapping energy can cause the improvement of living condition; while the better living condition would stimulate the increasing of the population; meanwhile, the larger ...  

According to these facts, a conclusion could be drawn that the more effective methods of tapping energy can cause the improvement of living condition; while the better living condition would stimulate the increasing of the population; meanwhile, the larger ...