2. WATER QUALITY QUALITYSOURCEEFFECTS pHPollutants in air that cause acid rain Kills certain freshwater organisms

3. QUALITYSOURCEEFFECTS TurbiditySediment and dirt Blocks light for photosynthetic plants and suffocates eggs

4. QUALITYSOURCEEFFECTS Dissolved Oxygen Overgrowth of aquatic plants Low levels at night and in early morning kill fish

5. QUALITYSOURCEEFFECTS SalinitySalty runoff from roads High concentrations kill freshwater organisms

6. QUALITYSOURCEEFFECTS NitratesFertilizersOvergrowth of aquatic plants Causes blue baby syndrome in infants

7. QUALITYSOURCEEFFECTS PhosphatesAnimal wastes Overgrowth of aquatic plants

8. QUALITYSOURCEEFFECTS TemperatureIndustries that return hot water to bodies of water Kills temperature sensitive aquatic animals and plants