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When an algal bloom occurs, what happens to other organisms living in that part of the water?
chemical runoff from lawns
an increase in dissolved oxygen
The source cannot be identified or comes from many different unknown sites.
by measuring its dissolved oxygen content.
ground water under the landfill
high numbers of bioindicators, low temperature, and high dissolved oxygen
Once treated, wastewater is released into a waterway.
They experience stress due to a decrease in dissolved oxygen levels.
Which example represents a non-point source of pollution?
chemical runoff from lawns
an increase in dissolved oxygen
The source cannot be identified or comes from many different unknown sites.
by measuring its dissolved oxygen content.
ground water under the landfill
high numbers of bioindicators, low temperature, and high dissolved oxygen
Once treated, wastewater is released into a waterway.
They experience stress due to a decrease in dissolved oxygen levels.
If all pollution must be caused by a source, how is it possible to have non-point source pollution?
chemical runoff from lawns
an increase in dissolved oxygen
The source cannot be identified or comes from many different unknown sites.
by measuring its dissolved oxygen content.
ground water under the landfill
high numbers of bioindicators, low temperature, and high dissolved oxygen
Once treated, wastewater is released into a waterway.
They experience stress due to a decrease in dissolved oxygen levels.
A landfill is most likely to directly pollute
chemical runoff from lawns
an increase in dissolved oxygen
The source cannot be identified or comes from many different unknown sites.
by measuring its dissolved oxygen content.
ground water under the landfill
high numbers of bioindicators, low temperature, and high dissolved oxygen
Once treated, wastewater is released into a waterway.
They experience stress due to a decrease in dissolved oxygen levels.
What is one way scientists analyze the health of a river?
chemical runoff from lawns
an increase in dissolved oxygen
The source cannot be identified or comes from many different unknown sites.
by measuring its dissolved oxygen content.
ground water under the landfill
high numbers of bioindicators, low temperature, and high dissolved oxygen
Once treated, wastewater is released into a waterway.
They experience stress due to a decrease in dissolved oxygen levels.
Which conditions indicate that a water system is healthy?
chemical runoff from lawns
an increase in dissolved oxygen
The source cannot be identified or comes from many different unknown sites.
by measuring its dissolved oxygen content.
ground water under the landfill
high numbers of bioindicators, low temperature, and high dissolved oxygen
Once treated, wastewater is released into a waterway.
They experience stress due to a decrease in dissolved oxygen levels.
What effect do waves in a river have on water quality?
chemical runoff from lawns
an increase in dissolved oxygen
The source cannot be identified or comes from many different unknown sites.
by measuring its dissolved oxygen content.
ground water under the landfill
high numbers of bioindicators, low temperature, and high dissolved oxygen
Once treated, wastewater is released into a waterway.
They experience stress due to a decrease in dissolved oxygen levels.
What is the primary difference between the treatment processes for drinking water compared to wastewater?
chemical runoff from lawns
an increase in dissolved oxygen
The source cannot be identified or comes from many different unknown sites.
by measuring its dissolved oxygen content.
ground water under the landfill
high numbers of bioindicators, low temperature, and high dissolved oxygen
Once treated, wastewater is released into a waterway.
They experience stress due to a decrease in dissolved oxygen levels.
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