BIO220 week 7 Topic 7 Quiz

What is methyl tertiary butyl ether (MTBE)?

A suspected carcinogen

A gasoline additive that has been used since the 1970’s to reduce the amount of carbon monoxide and unburned hydrocarbons in vehicle exhaust

A substance that has contaminated aquifers across the country

All of the above

• What percentage of Earth’s water is found in oceans?

A.

50%

B.

75%

C.

85%

D.

97%

• Which of the following terms is defined as contaminants carried by air currents and precipitated into watersheds or directly onto surface waters as rain, snow, or dry particles?

A.

Runoff

B.

Atmospheric deposition

C.

Evaporation

D.

Dissolved oxygen content

• What percentage of Earth’s water is freshwater?

A.

50%

B.

25%

C.

15%

D.

3%

• Which law provided billions of dollars to cities and states to build wastewater facilities?

A.

The 10th Amendment

B.

The Clean Water Act

C.

The Civil Rights Act

D.

The Pure Food and Drug Act

• What is the largest United States domestic use of water?

A.

Washing dishes

B.

Washing laundry

C.

Toilet flushing

D.

Showering

• About 95 percent of rural Americans depend on ________________ for drinking and other domestic purposes.

A.

Groundwater

B.

Oceans

C.

Rain

D.

Condensation

Provide two examples where water pollution has impacted human health and the environment.