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three samples of water from the creek behind you house once a month for the last six months. He tested the water and reported the results in the following data table. Water Quality Indicator Test Results Dissolved oxygen Dissolved oxygen levels in the last three months decreased rapidly. Fecal coliform Fecal coliform ranges from a low of 89 colonies per liter to 102 colonies per liter over the six-month period. Nitrates Nitrate levels ranged from 6 to 7 mg/L. Phosphates Phosphate levels were between 0.01 mg/L and 0.3 mg/L. pH The average pH was 6.9. Turbidity The water was clear in
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