Answers

2015-01-22T20:40:33+08:00
Basically, they are resources that can regenerate or can be naturally remade.

Some examples are air, water, and solar powered machinery.
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2015-01-29T19:39:06+08:00
 Some renewable resources have essentially an endless supply, such as solar energy, wind energy and geothermal pressure, while other resources are considered renewable even though some time or effort must go into their renewal, such as wood, oxygen, leather and fish. Most precious metals are considered renewable as well; even though they are not naturally replaced, they can be recycled because they are not destroyed during their extraction and use.  
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