15.4 MC: Sources of Water Pollution

Supplies of potable freshwater are in short supply in many parts of the world because

• of pollution of lakes and rivers.

• irrigation uses all of the freshwater is many areas.

• salt water intrusion.

• None of these are correct.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-4

The amount of oxygen required to decompose organic matter in water is called

• BOD

• respiration

• photosynthesis.

• DO.

What is biochemical oxygen demand?

• amount of oxygen required to decay a certain amount of organic matter

• a necessary material that is in short supply

• method by which settled organic matter is returned to aeration tanks

• None of these are correct.

Tags

NGSS.HS-LS2-4

Eutrophication occurs when

• nutrient increase causes excessive aquatic plant growth.

• point source pollutants enter the groundwater.

• fecal coliform bacteria enters drinking water.

• an industry returns heated water to its source.

Tags

NGSS.HS-LS2-6

NGSS.HS-LS2-7

Which of the following is a source of nonpoint water pollution?

• runoff from city streets.

• dust and other air pollutants that enter water.

• agricultural runoff.

• All options are examples of nonpoint water pollution.

• None of the options are an example of nonpoint water pollution.

Tags

NGSS.HS-ESS2-5

NGSS.HS-LS2-7

Thermal pollution of water is primarily from

• runoff from streets.

• increasing temperature due to climate change.

• release of heated water from industry.

• All of these are correct.

Tags

NGSS.HS-ESS2-5

Temperature change in water can alter the kinds and number of plants and animals.

• TRUE

• FALSE

Tags

NGSS.HS-LS2-6

An influx of organic compounds containing nitrogen and phosphorus into aquatic environments can cause an increase in aquatic plant and algae growth.

• TRUE

• FALSE

Tags

NGSS.HS-LS2-2

Agricultural runoff and mine drainage are examples of point sources of pollution.

• TRUE

• FALSE

Tags

NGSS.HS-LS2-7

Thermal pollution occurs when industry returns heated water to its source.

• TRUE

• FALSE

Tags

NGSS.HS-ESS2-5