bankruptcy – n. financial failure caused by not having enough money to pay debts

fracking – n. method used for getting oil and gas from underground rocks by injecting liquid into the rocks

efficiency – n. the quality or degree of being efficient

conservation – n. the protection of animals, plants and natural resources

revitalize – v. make something more active or lively

subsidy – n. money given by a government to help pay costs

emission – n. gas or energy that is sent into the air

partial – adj. not complete

sustainable – adj. able to be used without being completely used up or destroyed

irate – adj. very angry

principle – n. basic truth or theory

intrinsically – adv. occurring as a natural part of something
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