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4 Cards in this Set
- Front
- Back
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What chemical tests are run when measuring the quality of water? |
- check the acidity level (generally prefer neutral) - dissolved oxygen (8 g/mL) - BOD: biological oxygen demand (how quickly oxygen is used up) -phosphorus and nitrogen levels are checked (usually caused by fertilizer runoff) -eutrophication: when humans accidentally add nutrients to water, causing overgrowth of plants |
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What physical tests are conducted when finding the quality of water? |
- temperature - turbidity - conductivity |
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What biological tests are run when finding the quality of water? |
- amount of aquatic organisms - increased diversity= increased health - presence or absence of indicator organisms can tell us about the water (frogs, since they breathe through their skin, pollutants can be seen on their skin) |
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Name the different ways humans can negatively impact the quality of water? |
Heavy Metals - ex Hg/ Mercury -> male/female fertility -> cancer -> kidney/ lung disease -> immune system disorders Pesticides - chemicals that kill unwanted organisms Fertilizers - add nutrients into aquatic ecosystems |
