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What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water
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Can sexual intercourse affect your body in any way that you are harmed?
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The structure of cells has changed significantly overtime. what concept explains the presence of mitochondria in cells?
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Biology, 23.06.2019 04:00
After agricultural soils are picked up and carried by a river, how are they deposited in the river’s del which is not a cause of desertification? a) light grazing b) contour plowing c) conversion of rangelands to crop lands d) high population density
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