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53 Cards in this Set
- Front
- Back
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Which pollution comes from a single source?
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point-source pollution
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How is non-point source pollution difficult to control?
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It comes from many sources
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What are DO levels?
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level of dissolved oxygen in the water
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How many steps are there in the sewage treatment plant?
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5-7
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at what level is water too acidic for aquatic life?
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below 6.0
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what is a sewage treatment plants?
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a facility that cleans waste from the water
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what are two systems for cleaning water?
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sewage treatment plants, septic tanks
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what percent of our water is used for industry?
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19%
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what kind of pollution is caused by run off or fertilizers?
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non-point source
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what is any natural material that is used by humans called?
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natural resource
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is coal renewable or non renewable?
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non
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conserving resources means?
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saving resources
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what are two major renewable resources?
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wood and water
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earth provides everything needed for ?
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life
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what is a nonrenewable resource?
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a resource that cannot be replaced at the same rate it is used
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recycling is?
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reusing materials from waste or scrap
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recycling reduces?
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the amount of resources needed from the earth
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name three ways to conserve natural resources
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dont waste, use only when needed, take care of resources, limit use of energy
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how can primary pollutants get put intot he air? 1 example
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human or natural activity
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automobile exaust can cause what when it enters the air?
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smog
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what type of air can keep smog close to the ground?
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warm air
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what is precipitation that contains acids from air pollution?
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acid percipitation
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what are scrubbers used for?
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to remove pollutants before they enter the air
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what are two short term affects of air pollution?
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headache,nausea,irratated eyes nose and throat, coughing, worsen asthma
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what are two long term affects?
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emphysemia, lung cancer, lung damage, heart disease
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when was the clean air act passed?
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1970
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what does EPA stand for?
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envirmental protection agency
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what are manufacters trying to make cars run on instead of gasoline?
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hydrogen, natural gas
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what is a rapid change in a body of water called?
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acid shock
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what is ventilation?
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mixing of indoor and outdoor air
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what chemical was causing the ozone to break down into oxygen?
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CFCs
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what years did scientists find a hole in the ozone?
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1980s
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what are the cars that use a combonation of gasoline and electric power called?
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hybrid cars
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what is an example of point source pollution?
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leaking oil tanker, factory, waste water treatment plant
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what was found along beaches in the 1980s?
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bandages, vials of blood, syringes
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how much med waste is pruduced yearly in the united states?
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3 million tons
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what is sludge?
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solid part of raw sewage
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what did some people do with sludge?
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dump it into the ocean
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how much money did the exxon oil company spend cleaning up an oil spill?
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2 billion
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what is a startegy used to preven oil spills?
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using two hulls
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what is adopt a beach?
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a public beach clean up program
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how much money does the USA spend to protect the ocean?
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130 million
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what is soil conservation?
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trying to keep soil fertile
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what is the region where an animal lives called?
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it habitat
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what is soil needed for? (one)
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helps plants get moisture, also stores and controls water
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overused soil becomes?
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infertile
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erosion is?
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the process by which wind water and rain transports sediments
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what is plowing to the slope called?
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contour plowing
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what is planting different crops to restre nutrients called?
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cover crops
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what is leaving old crops on the field called?
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No till farming
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what is a way to preven erosion on steep slopes?
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terracing
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who reccomened to plant soybeans and peanuts to return nutrients to the soil?
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george washington carver
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using different crops each is?
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crop rotation
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