All objects and materials on Earth are either Natural Resources or human-made. Natural Resources come from the Earth, and are not synthesized in any way by humans. Human-made objects are made when humans manipulate natural resources in order to change their function in some way.
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All objects and materials on Earth are either natural resources or human-made. Natural resources come from the Earth, and are not synthesized in any way by humans. Human-made objects are made when humans manipulate natural resources in order to change their function in some way.