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What are chemicals that provide nutrients to help crops grow better? This chemical can speed up the growth of algae in a pond.
fertilizers
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What is the water and human waste that gets washed down sinks, toilets and showers called?
sewage
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What is any change to water that can harm people or other living things called?
water pollution
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What is a period when less rain than normal falls in an area?
drought
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Water shortages in an area occur when people use water in an area faster than the ___________ can replace it.
water cycle
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A________________ is an area in which water, sediments and dissolved materials drain into a common outlet, such as a river, bay, lake or ocean.
watershed
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Water stored in layers of soil and rock beneath Earth's surface is called______________.
ground water
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Salt water cannot be used to do certain things like _________________.
for drinking or watering crops
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What three large rivers drain into the Long Island Sound?
- Connecticut
- Housatonic
- Thames
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Water is scarce on Earth because 97% of it is_________.
salty
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Why is there such a problem on Earth with usable water?
97% of the water is salty
Only 3% of the water on Earth is fresh
3/4 of the fresh water is frozen or in the form of ice
Some water is not available because it is far from the area in need
A lot of water is polluted
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How do bodies of water get polluted from water from storms?
Water falling to Earth from the water cycle picks up pollutants from the ground.
Water then carries the pollutants in the running water to a another body of water.
The precipitation and pollutants collect in the body of water.
The body of water then gets polluted.
The entire aquatic ecosystem may then be harmed. (producers and consumers)
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What is the major role of technology in controlling air pollution?
to reduce emissions
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What is the most dramatic (worst) forms of water pollution?
an oil spill
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What are chemicals called that kill crop destroying organisms, such as beetles, ants or worms?
pesticides
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Particles of rock and sand are called____________________.
sediments
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How can people reduce water pollution?
Treat wastes so they are less harmful
Find substitutes for pollutants
Place trash and recycling in proper bins
Don't litter
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How do humans contribute to the water pollution problems on Earth?
Improper sewage management
Pouring contaminants down the drain
Careless use of pesticides and fertilizers
Improper use of hazardous wastes
Litter on ground that gets wet and then creates leachate, or polluted liquid
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