WaterOnline version Based on the text “Water pollution” answer the following multiple-choice questions. by YURANY ZAPATA SALDARRIAGA 1 What of this thing causes changes in the quality of the water? a Eutrophication b Organic pollution c Hazardous substances d Oil e All are possible 2 What situations cause changes in habitats? Choose one or more answers a Physical disturbance through damming. b Channelization and dredging of rivers. c Construction of reservoirs. d Sand and gravel extraction in coastal waters. e Bottom trawling by fishing vessels. 3 Where does the direct point source and diffuse pollution come from? Choose one or more answers a Urban populations b Changes in the clime c Rural populations d Plants and animals in lakes e Industrial emissions f Farming 4 Are oxygen consuming substances associated with a direct pollution? a True b False 5 Are oxygen consuming substances not associated with a diffuse pollution? a True b False 6 What are some of the key pollutants in agriculture? Choose one or more answers a Pesticides b Sediment c Hazardous chemicals d Fecal microbes e Plants and animals in lakes
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