Hydrosphere Question Preview (ID: 44030)


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Estuaries are ..
a) a zone of the ocean
b) places were salt water and fresh water meet.
c) a river
d)

what zone of the ocean are hydrothermal vents located
a) intertidal
b) abyssal
c) benthic
d)

What is one benefit of estuaries
a) They are sources of commerical fish
b) the help reduce erosion and flooding
c) they are environmental filters
d) all of the above

What supports life at the bottom of the ocean?
a) hydrothermal vents
b) plants
c) sunlight
d)

This is the process of removing salt from salt water to make it freshwater.
a) desalination
b) salt removal
c) condensation
d) that is not possible

Where is most of our drinkable water
a) lakes
b) rivers
c) oceans
d) aquifers

This type of pollution is too widespread to identify the problem
a) point source pollution
b) nonpoint source pollution
c)
d)

Why is the ocean salty
a) Gasses from the atmosphere
b) pollution
c) erosion from the ocean washing over Earth's rocks
d) organisms in the water

How much of earth's freshwater can we actually use?
a) 97%
b) 3%
c) 2%
d) 1%

What form is most of earth's freshwater in
a) frozen water
b) ground water
c) surface water
d) atmospheric water

How much of the earth's water is not available for human consumption because it is salt water
a) 97%
b) 3%
c) 77%
d) 25%

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