A.  a bunch of crabs run out of the water and onto the shore, carrying all the water pollutants with them.
B.  rain carries all pollutants, trash, dirt, and nutrients in its path as it flows into the bay.
C.  toxic chemicals run off the back of a truck and onto the road.
D.  chemicals accumulate in aquatic plant tissue.

2.  One of the most harmful consequences of run-off pollution is eutrophication. Eutrophication...

A.  is initiated by too many nutrients in the water which causes algal blooms to occur.
B.  causes less sunlight to reach the bottom of the bay, resulting in dead S.A.V.s.
C.  results in a decrease in dissolved oxygen, water clarity, and marine life.
D.  all of the above

3.  An effective way to decrease run-off pollution is to:

A.  dig up all plants, bushes, and grasses near your neighborhood stream.
B.  plug up all the storm drains on the streets so that nothing can get to the bay.
C.  put concrete on all stream and riverbanks to absorb chemicals before they dump into the bay.
D.  put my trash in a garbage can, decrease the amount of chemicals my family uses on our lawn and farms, and plant trees, bushes, and plants by streams and rivers.

4.  4. Streams with eroded banks often contain little or no living creatures.

A.  True
B.  False

5.  In 1970, the Environmental Protection Agency passed the Clean Air Act. It listed 6 "Criteria Pollutants" that are most plaguing our air. Which of the following is NOT one of them?

A.  carbon monoxide
B.  nitrogen oxides
C.  acid rain
D.  particulate matter
E.  ozone
F.  lead

6.  Which of the following is NOT a major source of criteria pollutants?

A.  cars	B.  gas stations
C.  smog	D.  wood stoves	E.  electric power plants

7.  Which of the following statements about power plants is most accurate?

A.  Power plants generate more pollution than all the people in the Chesapeake Bay watershed.
B.  Some power plants are involved in doing really cool stuff to help the Bay and the environment.
C.  Industries, such as power plants, pose the biggest threat to the Bay.
D.  To reduce pollution, all power plants should be eliminated.

8.  Industry surrounding the bay also contributes to pollution. The bottom of Baltimore Harbor is rich in one heavy metal in particular because there was a manufacturing plant located right next to the water. Which one of these heavy metals is lining the harbor?

A.  chromium
B.  lead
C.  mercury
D.  PCB

9.  Another form of pollution caused by industries is thermopollution. This occurs when:

A.  factories use bay water to cool off their machines and then return the scalding water back into the bay.
B.  the steam from a factory's smoke stacks releases harmful chemicals.
C.  industries dump toxins into the bay water to get rid of them, in this case the pollutant is phospho-thermo-oxide.
D.  A and B

10.  Some products we use contain Chlorofluorocarbons (CFCs). When they are released and broken down in the atmosphere, they create holes in the ozone layer. Which of the following uses CFCs?

A.  coolants in refrigerators and air conditioners
B.  propellants in aerosol sprays
C.  plastic foam blowing agents (like in making styrofoam)
D.  all of the above