A
B
C
D
E
100
Land that drains into a river
What is a watershed
100
a leaking gasoline tank would be an example of this
What is point-source pollution
100
Three percent of the Earths water is of this type
What is fresh water
100
97% of the Earths water is this type
What is salt water
100
Parasitic worms are an example of this type of water pollutant
What is pathogen
200
Area above an aquifer
What is recharge zone
200
bottled water, filtered water, reverse osmosis, all provide this type of water
What is potable
200
bacteria, viruses, protozoans are all types of these
What are pathogens
200
lead mercury and arsenic are types of this pollution
What is heavy metals
200
H2O is the chemical formula for this
What is water
300
Run off from agricultural fields is an example of this type of pollution
What is non-point source pollution
300
In the water treatment process, this is added to the water to kill or limit bacterial growth
What is chlorine
300
phosphates in laundry detergent would be an example of this type of process
What is artificial eutrophication
300
animal and plant matter remains are this type of pollution
What is organic matter
300
Water is unique because it exists in 3 forms: liquid, solid, and this
What is gas
400
We call fresh water this type of resource because most surface water contains salt
What is limited
400
This is the largest watershed in the United States
What is Mississippi River watershed
400
Law designed to improve water quality
What is 1972 Clean Water Act
400
Using a low flow shower head or toilet is one way we can do this for water
What is to conserve
400
this type of water is difficult to clean from pollution because it is deep in the ground through large areas of rock
What is groundwater
500
Many areas of the world that do not have fresh water have become this because of water management projects diverting water to that area
What is habitable
500
The requirement that tankers in U.S. waterways be double hulled by the year 2015 is a result of this Act
What is 1990 Oil Pollution Act
500
2 main ways fresh water are used OR types of waste water
What is residential and industrial
500
Most pollutants in the ocean come from this
What is activities on land
500
manufacturing processes, disposal of waste products, generating power, and cooling are all uses for fresh water in this type of setting
What is industry
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