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27 Cards in this Set
- Front
- Back
The greatest contributor of water pollution |
Agriculture |
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The greatest contributor of water pollution |
Solid waste (garbage) |
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An indicator that human and/or animal wastes are in a water source |
coliform bacteria |
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A type of organic waste |
Sewage |
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Nonpoint sources of water pollution |
Livestock feedlots, urban lands, a logged forest, croplands, and parking lots |
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Point sources of water pollution |
A factory, offshore oil wells, an active or inactive coal mine, an electric power plant, and a sewage treatment plant |
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Oxygen Sag Curve |
A sequence of events brought on by bacteria breaking down oxygen demanding wastes that are entering a flowing stream. |
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Lake and Reservoir Recovery |
Low flow, stratified layers, and little vertical mixing prevent quick recovery of this ecosystem from water pollution. |
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Groundwater Recovery |
High absorbency of sediments, widening plumes of dispersion, low dissolved oxygen, and less decomposing bacteria prevent quick recovery of this ecosystem from water pollution. |
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River and Stream Recovery |
Dilution of flowing water and bacterial breakdown enhance the recovery of this ecosystem from moderate water pollution. |
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Cultural eutrophication |
An acceleration in the input of plant nutrients into a shallow lake, estuary, or slow moving stream brought on by human actions
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Eutrophication |
The natural nutrient enrichment of a shallow lake, estuary, or slow moving stream |
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What saved Lake Washington from getting worse? |
Citizen action combined with scientific research |
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The toxin that is the most common pollutant in drinking water |
Arsenic |
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A common misconception of bottled water |
It is safer in meeting drinking water standards than tap water |
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Surface water sewage dumping is most extreme in this ecosystem |
Coastal beaches |
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Examples of harmful algal blooms |
Red, green, and brown tides |
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Consequences of harmful algal blooms |
Release waterborne and airborne toxins, poison seafood, kill some fish-eating birds, and reduce tourism |
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The world's largest "dead zone" |
The Gulf of Mexico |
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The majority of the oil pollution of the ocean comes from |
runoff from land |
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Methods to reduce agricultural runoff |
Using slow-release fertilizers, keeping cropland covered with vegetation, and planting buffer zones between cultivated lands and water |
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Large oil tanker that ran aground in Alaska |
Exxon Valdez |
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Oil rig explosion in the Gulf |
Deepwater Horizon |
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Primary sewage treatment |
A physical process |
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Secondary sewage treatment |
A biological process |
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Tertiary sewage treatment |
A chemical and physical process |
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Both cleaned septic tank and water from wastewater treatment plant... |
is not safe for human consumption, but is safe to be put into a watershed |