Water Resources and Water Pollution

How can we help prevent water pollution? (There is more than one answer.)

• Use less detergents

• Do not pour grease down the drain

• Allow farm waste to wash off into the lakes.

• Use less fertilizers on yards and crops

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Less than 3% of the water on earth is

• salt water

• freshwater

• ice

• polluted

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NGSS.MS-ESS2-4

Most of the world's freshwater is found here?

• ocean

• lakes

• rivers

• glaciers

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How much of the world's surface water is drinkable?

• Less than 1%

• 5%

• 25%

• 99%

Most of our drinkable water is found where?

• ponds

• ocean

• groundwater

• pool

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NGSS.MS-ESS2-4

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Water that is stored in pores, soil, sediments and rocks is known as_____________?

• salt water

• freshwater

• soil water

• groundwater

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NGSS.MS-ESS2-4

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The main source of water for most people is ___________.

• ocean

• lake

• groundwater

• glaciers

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What are the two main problems with water?

• overuse and pollution

• frozen and too salty to drink

• too many fish and pollution

• color and taste

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How do humans affect the availability of water? (Select more than one answer.)

• Building dams

• Changing (modifying) lakes and streams

• Overuse of water for power and agriculture

• Melting glaciers

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NGSS.MS-ESS3-4

This substance from sewage, agriculture, and industries lowers the quality of water and kills fish and other living things in it.

• ocean water

• groundwater

• smog

• runoff

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