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fossil fuel – n. a fuel (such as coal, oil, or natural gas) that is formed in the earth from dead plants or animals
board – n. a group of people who manage or direct a company or organization
obligation – n. something that you must do because of a law, rule, promise
endowment – n. a large amount of money that has been given to a school, hospital, etc., and that is used to pay for its creation and continuing support
shareholder – n. someone who owns shares in a company or business
