ecosystem – n. everything that exists in a particular environment, including living things -- such as plants and animals -- and things that are not living -- such as rocks, soil, sunlight and water

geothermal – adj. of, relating to, or using the natural heat produced inside the Earth

zoning – n. a system of rules used to control where businesses and homes are built in a city or town

site – n. the place where something (such as a building) is, was or will be located

grid – n. a network of electrical wires and equipment that supplies electricity to a large area

timber – n. trees that are grown in order to produce wood

log – v. to cut down trees in an area for wood
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