1. Oil is particularly hard to clean up because

It does not evaporate easily
Dispersion is fast and complete
It is light and floats away
Once spilled it can be reused

2. Useful ways to handle oil spills are to have contingency plans and have drills

true
false

3. The major source of petroleum pollution into water bodies is from:

Improper storage on land
Tanker spills
Urban runoff & sewer outflows
Natural sources

4. If a quart of oil is poured onto still water it will:

Sink as it is heavier than water
Disperse in tiny droplets to cover about 4 square miles
Kill many benthic invertebrates within 24 hours
Disperse in a thin film to cover about 4 acres

5. More significant to pollution than the few large spills are
the number of geese fouling an area
the number of species inhabiting an area
the many day-to-day spills and discharges
none of the above

6. . Worms:

are often ingested in contaminated fish
called "flukes" cause "swimmer's itch"
are often a problem after floods
all of the above

7. Protozoa:
 
all of the items below
are often resistant to chlorination & must be filtered out
have caused widespread illness in the U.S. even in the 1990's
have been in about 10% of the U.S. population

8. Cleaning and rehabilitation of waterfowl has substantial ecological value.

true
false

9. Viruses:

cause illnesses by producing phlegm
are a major threat as a source of widespread waterborne illnesses in the U.S
cause more waterborne illness in the U.S. than bacteria
are common in the human intestine

10. Amoebic dysentery is associated with which pathogen?

Protozoa
Virus
Bacteria
Worm

Your score out of 100%: 

Your answers were: (C = Correct, X = Incorrect)

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