APES Ch 14 - Water
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Point source | a direct location from which pollution is produced that you can point to
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| nonpoint source | a diffused area that produces pollution; cant point to one source
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| Sewage: primary treatment | remove solids
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| Sewage: secondary treatment | digestion of sludge by bacteria, requires O2, captures methane as energy
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| Sewage: tertiary treatment | chlorine, ozone, or UV light kills bacteria, water exits to ecosystem
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| Oceanic dead zones from nutrient pollution | Fertilizers runoff into bodies of water creating eutrophication leading to dead zones
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| “oxygen sag curve” | In bodies of water with sewage, decomposers come in because they like the nutrients in sewage & perform cell respiration, taking all oxygen from water making it hypoxic. Only anaerobic organisms survive.
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| Sources of heavy metals on groundwater/drinking water | Lead found in pipes and other materials of older construction, arsenic occurs naturally through mining and industry, mercury occurs through burning coal
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| Impacts of heavy metals on groundwater/drinking water | Leads to damage to the brain and nervous system, slowed growth and development, learning and behavior problems, and hearing and speech problems
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| Causes and impact of increased sediment in waterways | Cause water to become darker leading to less photosynthesis, increased temperatures and can clog gills of aquatic animals
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| What is Eutrophication? How does it lead to die-offs? | A phenomenon in which a body of water becomes rich in nutrients; causes rapid growth of algae which eventually dies, causing the microbes to increase the BOD
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| “Hypoxic”- What does this mean for a body of water | Low concentration of oxygen
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| Eutrophic | highly productive, with lots of plants/algae and less clear water
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| Oligotrophic | nutrient-poor, very few plants and very clear water
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| What is thermal pollution? Sources? | Non Chemical water pollutants that occur when human activities cause a substantial change in the temperature of the water (factories taking in cold water and releasing hot water back)
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| Thermal pollution impacts on dissolved oxygen | Warmer water has less dissolved oxygen
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| Noise pollution | Sounds emitted by ships in submarines
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| Impact of noise pollution on ecosystem | Interferes with animal communication
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| Clean Water Act | Issued water quality standards that defined acceptable limits of various pollutants in U.S. waterways
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| Safe Drinking Water Act | Establishes maximum contaminant levels for 77 different elements or substances in both surface water and groundwater
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Created by:
maddiehubbs