1.
how would a person most likely become ill from fecal coliform in water? (2 points)

fecal coliform may contain dangerous bacteria or viruses.
fecal coliform is associated with cancer in adults.
the water may contain toxic heavy metals.
there are no ill effects of fecal coliform in water.
2.
which of the following is a sign of poor quality water? (2 points)

zero turbidity
a ph of 7.0
high phosphate content
high dissolved oxygen
3.
compared to nonpoint source pollution, point source pollution (2 points)

comes from many sources.
is more difficult to control.
can be more readily identified.
does not happen near rivers.
4.
which of the following is typically associated with acid precipitation over a body of water? (2 points)

a decrease in ph
an increase in ph
a decrease in water temperature
an increase in water temperature
5.
which of the following is an indicator of good water quality? (2 points)

ph higher than 9.0
low levels of fecal coliform
low levels of dissolved oxygen
all of the above
6.
which of the following is an action that people in florida could take to protect the everglades? (2 points)

decrease the amount of household detergents they use
remove photosynthesizing plants from the shores along wetlands
vote for politicians who support draining sections of wetland for sugar farming
purchase foods from local farmers who use large amounts of fertilizers on their fields
7.
which of the following is a common source of groundwater pollution? (2 points)

oil slicks
erosion along riverbanks
spraying crop fields with pesticides
throwing used beverage containers into a lake
8.
a home gets its water from a private well. which of the following would be the best way for the homeowner to obtain a water-quality report? (2 points)

hire a local contractor to test the home's water supply
record observations made by smelling and tasting the tap water
request data from the local water treatment facility
ask neighbors for a sample of their water to compare
9.
which of the following is a type of pollution measured in the everglades? (2 points)

fertilizer runoff
sugar farm drainage
fish population decrease
sugar cane planting
10.
which of the following is the most likely way for bacteria and viruses to enter a water supply? (2 points)

increased photosynthesis releases bacteria and viruses
poor sanitation habits cause water to mix with sewage
water from a burst dam sweeps particulate matter into a nearby river
chemical fertilizers dumped into the water attract bacteria and viruses
11.
summarize your findings from the water quality lab. be sure to include your observations and the sources of each water-quality issue you investigated. (5 points)

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12.
sandy completed ph and fecal coliform tests on water samples from the pond in her backyard. she reported the results in the following charts.

two graphs showing water-quality indicators for sandy's pond over one year. the graph labeled 'ph' shows that the pond's ph fluctuated between approximately 6.5 and 7.5. the graph labeled 'fecal coliform' shows that for most of the year there were approximately 10 colonies per liter of water in the pond. the exception was june, in which there were more than 100 colonies per liter of pond water.

what can you conclude about the water quality of sandy's pond over the past year? explain. (5 points)