(v.) to give help or support, backed by , conserve , construction , (v.)to use as little of something as possible so that it lasts a long time, backed by , conserve , construction , (n.)the process or method of building or making something, conserve , consumption , construction, (v.)to be one of the causes of something , consumption, contribute , efficient , (n.) the act of using energy ,food, or materials , construction, contributor , consumption , (adj.) doing something well and thoroughly with no waste of time , money, energy , contribute , efficient, enhance , (v.) to include something so that it forms a part of something , incorporate, maintenance , occupant , (n.)the act of keeping something in good condition, incorporate , maintenance , sustainable, (n.) a person who lives or work in a paticular place , maintenance, occupant, status, (n.)the legal position of a person , group , or country , occupant, status, sustainable, (adj.) involving the use of natural products and energy in a way that doesn't harm the environment , sustainable , status, enhance.

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