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If total revenue falls when output increases,marginal revenue is
Oil Shale
Sedimentary rock containing organic matter that can be converted into shale oil through heating; a potential but controversial energy resource.
Oil and Gas
Natural hydrocarbon resources extracted from the Earth, used primarily for energy, heating, and in various industrial applications.
Coal
A black or brownish-black sedimentary rock that is formed from compressed organic matter and used as a fuel.
Rites of Enhancement
Traditional or ceremonial acts that improve or elevate the status of individuals within a community or organization.
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