Crossword Puzzle EnvironmentOnline version Power up 4 Unit 3 by Nadin Sparrow 1 Water, especially from a river or stream, dropping from a higher to a lower point, sometimes from a great height 2 An area, often covered with sand or rocks, where there is very little rain and not many plants 3 A large hole in the side of a hill, cliff, or mountain, or one that is underground 4 A forest in a tropical area that receives a lot of rain 5 Water that flows naturally along a fixed route formed by a channel cut into rock or ground, usually at ground level 1 2 5 4 3
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