preservation is to protect the environment, and also help to prolong the life of use to go out again with long
2.the rebuilding effort and reuse or called the recycling in addition to the rebuilding effort and preserve environment and natural resources.
5. The other thing to use instead of the other thing, and use the natural resources and the Environment some substitution may be made such as the natural gas used to fuel substitution in the car Using solar power alternative
7.the invention of artificial use of Progress of science and technology, human beings can be used as a replacement for the production of artificial use of natural resources.
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