ENVS 1126 Exam 2- LSU
The price of gas today is very low. Which one of the following is a potential unfavorable
environmental outcome that could result from today's low gas prices. - ANS-lower prices could
encourage drivers to take more frequent and-or longer road trips.
This is not a consequence of urban sprawl: - ANS-lower incidence of obesity and high blood
pressure
How might coral bleaching in the ocean be caused by urban sprawl? - ANS-Cutting down trees
→ decreased removal of CO2 from atmosphere → increased CO2 in atmosphere → increased
CO2 in ocean → decreased ocean pH → unhappy zooxanthellae (colorful symbiotic algae) →
algae and color go away
Which one of the following most likely describes (and provides an example of) a city with a high
degree of urban blight and a low degree of urban sprawl? - ANS-low car ownership levels, high
density housing, strained public resources, less air pollution e.g., New York, NY
The ability of an ecosystem to replenish itself leads to - ANS-Sustainability
Which one of the following best illustrates consumptive use of a resource? - ANS-A farmer in
Indiana shoots a wild turkey for his Thanksgiving dinner
When completed, the Comprehensive Everglades Restoration Plan will - ANS-redirect much of
the water flow southward
We expect that as mangroves continue to be destroyed worldwide - ANS-coastal erosion will
increase.
Compared to forests using sustainable forest management, commercial forests managed for
maximum sustainable yield of commercially valuable species will most likely - ANS-have greater
erosion problems.
The growth of the global fish harvest in the last 20 years has mostly been due to increases in
what? - ANS-aquaculture
An example of consumptive use of a natural resource is ____. - ANS-wild boar (pigs) hunted for
personal use (eating)
The maximum population of a given species that an ecosystem can support without being
degraded or destroyed in the long run is called - ANS-carrying capacity
, The maximum sustainable yield for most populations must be recalculated every year because -
ANS-changing environmental conditions create variations in carrying capacity
Maximum Sustainable yield is ____. - ANS-the maximum amount of a resource that can be
taken out while the system still maintains or replenishes.
The greatest potential for sustainable growth in fisheries is in ____. - ANS-aquaculture
Which one of the following best represents the productive use of a natural resource? - ANS-a
woman gathers mushrooms from a forest to sell in the local produce market.
In general, humans can harvest renewable resources of plants and animals at sustainable
levels because - ANS-organisms naturally produce many more offspring than are needed to
maintain their populations.
Increases in ocean temperatures often result in coral bleaching, in which - ANS-the symbiotic
relationship between corals and their algae is disrupted.
In the state of Arizona, the use of groundwater has been aggressively managed since 1980.
Before, agricultural, commercial, private demands for water growing at levels not sustainable.
Before water regulation, demand for water all forms Arizona illustrated the - ANS-tragedy of the
commons
The total allowable catch of a marine fish used for human food would be determined by
calculating the - ANS-maximum sustainable yield.
With respect to ecosystems, what is the main difference between consumptive and productive
use? - ANS-Consumptive use refers to the use of natural systems for basic human needs, while
productive use implies use for economic gain
In the hydrologic cycle, water enters the atmosphere through 1) ___ and 2) ___, and its
destinations when it returns to the earth's surface are 3) ___, 4) ___, and 5) ___. - ANS-1)
evaporation 2) transpiration 3) reabsorption 4) percolation 5) runoff
The percentage of the world's water that is saltwater is 1)___. The percentage that is available
freshwater is 2)___. The percentage that remains frozen in polar ice caps and glaciers is 3)___.
- ANS-1) 97.5 2) 0.77 3) 1.7
Where is a majority of the Earth's freshwater stored? - ANS-icecaps
Why are recharge areas important? - ANS-they allow reabsorption of water into the soil which
ultimately feeds groundwater.
The price of gas today is very low. Which one of the following is a potential unfavorable
environmental outcome that could result from today's low gas prices. - ANS-lower prices could
encourage drivers to take more frequent and-or longer road trips.
This is not a consequence of urban sprawl: - ANS-lower incidence of obesity and high blood
pressure
How might coral bleaching in the ocean be caused by urban sprawl? - ANS-Cutting down trees
→ decreased removal of CO2 from atmosphere → increased CO2 in atmosphere → increased
CO2 in ocean → decreased ocean pH → unhappy zooxanthellae (colorful symbiotic algae) →
algae and color go away
Which one of the following most likely describes (and provides an example of) a city with a high
degree of urban blight and a low degree of urban sprawl? - ANS-low car ownership levels, high
density housing, strained public resources, less air pollution e.g., New York, NY
The ability of an ecosystem to replenish itself leads to - ANS-Sustainability
Which one of the following best illustrates consumptive use of a resource? - ANS-A farmer in
Indiana shoots a wild turkey for his Thanksgiving dinner
When completed, the Comprehensive Everglades Restoration Plan will - ANS-redirect much of
the water flow southward
We expect that as mangroves continue to be destroyed worldwide - ANS-coastal erosion will
increase.
Compared to forests using sustainable forest management, commercial forests managed for
maximum sustainable yield of commercially valuable species will most likely - ANS-have greater
erosion problems.
The growth of the global fish harvest in the last 20 years has mostly been due to increases in
what? - ANS-aquaculture
An example of consumptive use of a natural resource is ____. - ANS-wild boar (pigs) hunted for
personal use (eating)
The maximum population of a given species that an ecosystem can support without being
degraded or destroyed in the long run is called - ANS-carrying capacity
, The maximum sustainable yield for most populations must be recalculated every year because -
ANS-changing environmental conditions create variations in carrying capacity
Maximum Sustainable yield is ____. - ANS-the maximum amount of a resource that can be
taken out while the system still maintains or replenishes.
The greatest potential for sustainable growth in fisheries is in ____. - ANS-aquaculture
Which one of the following best represents the productive use of a natural resource? - ANS-a
woman gathers mushrooms from a forest to sell in the local produce market.
In general, humans can harvest renewable resources of plants and animals at sustainable
levels because - ANS-organisms naturally produce many more offspring than are needed to
maintain their populations.
Increases in ocean temperatures often result in coral bleaching, in which - ANS-the symbiotic
relationship between corals and their algae is disrupted.
In the state of Arizona, the use of groundwater has been aggressively managed since 1980.
Before, agricultural, commercial, private demands for water growing at levels not sustainable.
Before water regulation, demand for water all forms Arizona illustrated the - ANS-tragedy of the
commons
The total allowable catch of a marine fish used for human food would be determined by
calculating the - ANS-maximum sustainable yield.
With respect to ecosystems, what is the main difference between consumptive and productive
use? - ANS-Consumptive use refers to the use of natural systems for basic human needs, while
productive use implies use for economic gain
In the hydrologic cycle, water enters the atmosphere through 1) ___ and 2) ___, and its
destinations when it returns to the earth's surface are 3) ___, 4) ___, and 5) ___. - ANS-1)
evaporation 2) transpiration 3) reabsorption 4) percolation 5) runoff
The percentage of the world's water that is saltwater is 1)___. The percentage that is available
freshwater is 2)___. The percentage that remains frozen in polar ice caps and glaciers is 3)___.
- ANS-1) 97.5 2) 0.77 3) 1.7
Where is a majority of the Earth's freshwater stored? - ANS-icecaps
Why are recharge areas important? - ANS-they allow reabsorption of water into the soil which
ultimately feeds groundwater.
