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6 Cards in this Set
- Front
- Back
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Pollution that comes from one specific site is called
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Point- source pollution
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Pollution that comes from many sources
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Non-point pollution
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Oxygen that is dissolved into water is called
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DO( Dissolved oxygen
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Drity water is passed through a large screen to catch big objects.
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Primary treatment
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Water is sent to an aeration tank, where it is mixedwith oxygen and bacteria.
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Sencondary Treatment
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A tank that holds waste and then breaks it down .
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Septic tank
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