tranthuongbn
Junior Spre-er
Posts : 222
Join date : 2010-11-26
 | | Subject: Natural resource Thu Dec 09, 2010 7:19 pm | |
| Natural resources (economically referred to as land or raw materials) occur naturally within environments that exist relatively undisturbed by mankind, in a natural form. A natural resource is often characterized by amounts of biodiversity existent in various ecosystems. Natural resources are derived from the environment. This is currently restricted to the environment of Earth yet the theoretical possibility remains of extracting them from outside the planet, such as the asteroid belt. timberland bootsskin derma | |
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