mcookie09 mcookie09

23-03-2020
Biology

contestada

How can pollution affect the level of oxygen in water? Why is this
important?

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natjojo051211 natjojo051211

26-03-2020

oxygen is necessary for good water quality. As dissolved oxygen levels in water drop below 5.0 mg/l, aquatic life is put under stress. The lower the concentration, the greater the stress

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