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The natural resources are non-rerenewable, when it comes to the time when the natural are exhuasted. The earth won\'t be suitable for human forever if we keep ruining it, taking from it instead of taking care of it. From now on, think, before you plug something into the socket. You can either save some energy for the earth by leaving the \"Green plug\" on and green on your house and the whole world, or pull the leaves off the wall and keep exhausting the resources of the earth.
Taipei University of Technology