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[...]...MS.NR.3.4.ASSESS.A Point vs NonpointSourceWaterPollution Name _ Section 1: Short Answer Directions: Answer the following questions correctly 1 The addition of harmful chemicals or substances to water is called _ 2 _source waterpollution occurs when the contaminant comes from an obvious source 3 Give three examples of a pointsourcewater pollutant 4 source water. .. sourcewaterpollution occurs when the contaminant comes from a source that is not easily identifiable or from a number of sources 5 Give three examples of a nonpointsourcewater pollutant Natural Resources Science: Water 11