APES Unit 5 Exam Review with
Complete Solutions
What circumstance can result in a Tragedy of the Commons? - ANS-One resource must
be scarce
What is one example of Tragedy of the Commons? - ANS-air pollution (CO2 emissions
from exhaust pipe burning fossil fuels) from traffic congestion in urban areas
How are commons protected? - ANS-private property rights; government regulation;
development of a collective action arrangement
What is clearcutting? - ANS-Clearcutting is a cheap method of harvesting trees that
involves removing all or almost all of the trees within an area
What are two environmental problems associated with clearcutting? - ANS-destroying
buffer zones and habitat destruction
What was the Green Revolution? - ANS-a large increase in crop production in
developing countries achieved by the use of fertilizers, pesticides, and high-yield crop
varieties.
What are four innovations that lead to the Green Revolution? - ANS-Genetically
modified organisms, irrigation, synthetic fertilizers, use of machines
What is tilling? - ANS-turning up soil; leads to more runoff and erosion
Why do people use the slash and burn method? - ANS-it is a cheap way to create a
nutrient rich layer and clear out land
How does the slash and burn method impact the environment? - ANS-it releases CO2
into the atmosphere which is a green house gas that will eventually lead to heating the
earth
Are inorganic or organic compounds more likely to run off? - ANS-inorganic (synthetic)
What is drip irrigation? - ANS-small pipes slowly drip water just above ground; saves
water
What is flood irrigation? - ANS-the entire field is flooded with water; can water log soil
Complete Solutions
What circumstance can result in a Tragedy of the Commons? - ANS-One resource must
be scarce
What is one example of Tragedy of the Commons? - ANS-air pollution (CO2 emissions
from exhaust pipe burning fossil fuels) from traffic congestion in urban areas
How are commons protected? - ANS-private property rights; government regulation;
development of a collective action arrangement
What is clearcutting? - ANS-Clearcutting is a cheap method of harvesting trees that
involves removing all or almost all of the trees within an area
What are two environmental problems associated with clearcutting? - ANS-destroying
buffer zones and habitat destruction
What was the Green Revolution? - ANS-a large increase in crop production in
developing countries achieved by the use of fertilizers, pesticides, and high-yield crop
varieties.
What are four innovations that lead to the Green Revolution? - ANS-Genetically
modified organisms, irrigation, synthetic fertilizers, use of machines
What is tilling? - ANS-turning up soil; leads to more runoff and erosion
Why do people use the slash and burn method? - ANS-it is a cheap way to create a
nutrient rich layer and clear out land
How does the slash and burn method impact the environment? - ANS-it releases CO2
into the atmosphere which is a green house gas that will eventually lead to heating the
earth
Are inorganic or organic compounds more likely to run off? - ANS-inorganic (synthetic)
What is drip irrigation? - ANS-small pipes slowly drip water just above ground; saves
water
What is flood irrigation? - ANS-the entire field is flooded with water; can water log soil
