| http://www.w3.org/ns/prov#value | - AAAS Atlas Some people try to reduce the amount of fuels they use in order to conserve resources, reduce pollution, or save money. 8C/E4 Naturally occurring materials such as wood, clay, cotton, and animal skins may be processed to change their properties. 8B/E1 add this link to each standard listed below (grades 6-8 standard) Energy from the sun (and the wind and water energy derived from it) is
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