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To help go over the ones I had trouble on.

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Term
Definition
Turbidity   Measures the cloudiness of water. The lower the better.  
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Nitrates   Cause increase growth of algae. The lower the better.  
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Dissolved Oxygen   Should be high. Higher than 4 ppm.  
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Commensalism   A symbiotic relationship in which one species benefits and the other species is neither harmed nor benefited.  
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Mutualism   A symbiotic relationship in which both organisms benefit.  
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Parasitism   A symbiotic relationship in which one organism is harmed and the other benefits.  
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Law of Conservation of Matter   States that matter can neither be created nor destroyed in a chemical reaction.  
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