Nature's renewable freshwater is mainly the consequence of...
a. melting glaciers
b. deforestation
c. the channeling of waterways
d. the buildup of reservoirs around the globe
e. the sun (solar power) - correct answer e. the sun (solar power).
A...
Nature's renewable freshwater is mainly the consequence of...
a. melting glaciers
b. deforestation
c. the channeling of waterways
d. the buildup of reservoirs around the globe
e. the sun (solar power) - correct answer e. the sun (solar power).
Accessible runoff is defined (according to Postel et al.) as...
A. any water that is caught from water catchment systems.
B. the proportion of total runoff that is geographically and temporally available for human use.
C. strictly water flowing through the earth's crust.
D. all water from the atmosphere.
E. water bodies that have not been heavily resourced by humans. - correct answer
b. the proportion of total runoff that is geographically and temporally available for human use.
Nonreplenishable (fossil) groundwater (according to Postel etl al.) is...
A. water that, when tapped, does not replenish for thousands even millions of years.
B. contaminated with oil.
C. found near ground freshwater/seawater mixing zones.
D. found mostly in the tropics.
E. often found in areas with high precipitation. - correct answer a. water that,
when tapped, does not replenish for thousands even millions of years.
Which one of these four is NOT a category of "accessible runoff" water use?
A. recreational activities like sailing or surfing
B. Withdrawals or abstractions for human activities
, C. consumption that yields non-reusable water
D. human instream flow needs (e.g., fish spawning) - correct answer a.
recreational activities like sailing or surfing
Which industry uses the most "accessible runoff" worldwide?
A. Oil Production
B. Agriculture
C. Communication
D. Transportation
E. Military - correct answer B. Agriculture
About how much of the world's reservoirs is lost to evaporation per year?
A. 6.7%
B. 5%
C. 12%
D. 0.5%
E. 1.5% - correct answer B. 5%
Desalination supplies about 14% of world water use. True/False - correct answer
False
According to Postel et al. and their references, about how many large dams are being completed each
year?
A. 2000
B. 500
C. 200
D. 1500
E. 100 - correct answer B. 500
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