Question 1

Haiti and the Dominican Republic share the Caribbean island of Hispaniola. When tropical storm Jeanne hit Haiti and the Dominican Republic in September 2004, over 20 inches of rainfall occurred in 24 hours–more than a third of the rain that typically falls during an entire year. Forestry practices in these two tropical countries have been quite different. While the Dominican Republic's forests remain largely intact, most of Haiti's forests had been removed by 1990 as the rapidly growing population became increasingly dependent on subsistence farming in mountainous regions of the island. Tropical storm Jeanne created a national disaster for Haiti with over 3000 lives lost, but the Dominican Republic experienced very
short-lived effects and only 18 deaths.

-The deforestation in Haiti is largely a result of _________ .

Accepted Answer

A)  the need to sell timber for export
B)  a strong Haitian government that mandates the cutting of timber on federal lands to supply wood for urban development
C)  earthquakes on the Haitian side of the island
D)  the need for fuel wood and agricultural landE) B) and C)
F) All of the above

Question 2

All of the following would generally increase erosion except_____________ .

Accepted Answer

A)  growing cover crops
B)  deforestation
C)  overgrazing
D)  plowing and tillingE) All of the above
F) A) and B)

Question 3

The world's urban populations are __________

Accepted Answer

A)  growing at about the same rate as the rural populations
B)  shrinking in developing nations
C)  growing at a faster rate than the global population as a whole
D)  shrinking compared to rural populationsE) None of the above
F) A) and D)

Question 4

Which of the following is the largest city in the world?

Accepted Answer

A)  Delhi
B)  Shanghai
C)  Tokyo
D)  New YorkE) A) and B)
F) A) and C)

Question 5

Discuss the major environmental impacts of raising livestock for food.

Accepted Answer

There has been a recent increase in the global demand for meat and dairy products,which has been problematic because livestock need to eat,and the global amount of cropland has remained stable.Feeding increased amounts of crops to livestock e.g. ,feeding corn to cows)diverts crops that can be directly used to feed people.It is much less energetically efficient to eat meat than to eat a vegetarian diet,as only about 10% of the energy being fed to livestock ends up passed to the next trophic level i.e. ,the humans that eat the livestock).An alternative to feeding crops to livestock is to allow the livestock to roam and graze on rangeland.However,large amounts of water are also needed to raise livestock,and rangeland tends to be quite dry,so the need for water for livestock tends to put a strain on an already scarce resource.Areas where livestock graze are prone to the effects of overgrazing,especially during times of drought.Overgrazing can lead to decreased fertility of the land through soil erosion and desertification.Some areas such as Brazil are being deforested for the purpose of raising livestock.
Deforestation causes soil erosion,destroys ecosystems,and contributes to global climate change by putting sequestered carbon dioxide back into the atmosphere and possibly decreasing the area's ability to take up carbon dioxide via photosynthesis.An alternative to allowing livestock to graze on marginal lands is to keep them in a large confined feedlot,but doing so not only stresses the livestock and can lead to disease transmission,but it also creates problems with soil contamination and nutrient pollution in both surface waters and groundwater.

Question 6

To feed a growing population,it would be most energetically efficient for people to eat more ________.

Accepted Answer

A)  herbivorous animals like cattle and chicken
B)  carnivorous animals like fish and alligator
C)  soylent green
D)  plant-based foodsE) A) and B)
F) B) and D)

Question 7

Overgrazing by cattle primarily contributes to desertification by __________.

Accepted Answer

A)  cattle outcompeting natural herbivores
B)  spreading nonnative species
C)  promoting erosion and loss of rooted plant cover
D)  contaminating streams with cattle wastesE) A) and C)
F) B) and D)

Question 8

Haiti and the Dominican Republic share the Caribbean island of Hispaniola. When tropical storm Jeanne hit Haiti and the Dominican Republic in September 2004, over 20 inches of rainfall occurred in 24 hours–more than a third of the rain that typically falls during an entire year. Forestry practices in these two tropical countries have been quite different. While the Dominican Republic's forests remain largely intact, most of Haiti's forests had been removed by 1990 as the rapidly growing population became increasingly dependent on subsistence farming in mountainous regions of the island. Tropical storm Jeanne created a national disaster for Haiti with over 3000 lives lost, but the Dominican Republic experienced very
short-lived effects and only 18 deaths.

-Which of the following is most likely to be true?

Accepted Answer

A)  Compared to the Dominican Republic,Haiti's citizens have better access to imported foods.
B)  Before the deforestation occurred,Haiti already had far fewer forested areas than the Dominican Republic.
C)  Citizens of both Haiti and the Dominican Republic rely heavily on subsistence farming in mountainous areas.
D)  Compared to Haiti,the Dominican Republic has stronger laws preventing its citizens from deforesting their country.E) All of the above
F) A) and C)

Question 9

The Conservation Reserve Program pays farmers to _______.

Accepted Answer

A)  grow soybeans and other crops that can be used for biofuels
B)  grow cattle feed instead of commercial crops
C)  grow native crops such as corn and beans
D)  stop cultivating cropland along streamsE) None of the above
F) C) and D)

Question 10

The rising global demand for food has recently been met by__________ .

Accepted Answer

A)  an increase in per-acre crop yields
B)  cultivating more land
C)  decreasing the per-capita amount of food available
D)  switching to a diet high in fish and seafood,which do not require croplandE) A) and B)
F) C) and D)

Question 11

-According to the figure,it requires roughly_____________ times more feed input to produce 1 kg of eggs than 1 kg of milk.

Accepted Answer

A)  3
B)  4
C)  40
D)  30E) B) and C)
F) None of the above B

Question 12

Irrigation can result in the salinization of soils because ___________.

Accepted Answer

A)  shortages of fresh water require the use of salt water for irrigation
B)  many of the plants grown in these regions excrete salts into the soil
C)  salts are deposited on the soil surface as water evaporates
D)  the irrigation water washes away soil leaving behind concentrated saltsE) A) and B)
F) None of the above

Question 13

Which of the following most accurately describes cropland trends in the United States and China?

Accepted Answer

A)  Both countries are increasing in cropland acreage to support their growing populations and to maintain a growing export industry.
B)  The amount of land in crop production is decreasing in both countries despite the fact that both countries are increasing in population.
C)  China's population boom has resulted in a recent increase in cropland acreage,while cropland acreage in the United States has stabilized.
D)  The amount of land in crop production has stabilized in both countries despite the fact that both countries are increasing in population.E) A) and B)
F) C) and D)

Question 14

__________is the buildup of salts in soils as a result of improper irrigation.

Accepted Answer

A)  Erosion
B)  Salinization
C)  Desertification
D)  LeachateE) A) and B)
F) B) and C)

Question 15

-There is a great deal of cropland but very little pasture and rangeland in_________ .

Accepted Answer

A)  Africa
B)  Australia
C)  North America
D)  EuropeE) A) and B)
F) A) and D) D

Question 16

Which of the following most accurately describes population trends in the United States during the latter half of the 20th century?

Accepted Answer

A)  Large cities annexed nearby towns so they could grow and provide places for their residents without those residents having to move to the suburbs or rural areas.
B)  Having grown weary of high crime rates and urban squalor,a mass migration of city dwellers into rural areas occurred in the years following World War II and the Korean War.
C)  A large migration into the inner cities occurred after World War II as the economy recovered from the Depression and people were more able to live in areas close to where they worked.
D)  A large migration from inner cities to suburbs occurred in the latter half of the 20th century,as people were attracted to new lower-density housing.E) None of the above
F) All of the above

Question 17

The main cause of desertification is_____________ .

Accepted Answer

A)  global increases in temperature
B)  destruction of the ozone layer
C)  human activities
D)  shifting weather patternsE) A) and C)
F) A) and D)

Question 18

-Cows require a high quantity of feed because they______ .

Accepted Answer

A)  are raised on feedlots
B)  can feed more people than pigs
C)  take time to grow and have a low energy conversion efficiency
D)  are the best source of high-quality proteinE) B) and D)
F) None of the above

Question 19

Irrigation has allowed humans to grow crops in areas where natural water supplies have been limited.A major challenge that exists in these areas has been ___________.

Accepted Answer

A)  soil salinization
B)  soil erosion
C)  high pesticide use
D)  low crop diversityE) B) and C)
F) All of the above

Question 20

Desertification is__________ .

Accepted Answer

A)  the formation of dryland ecosystems in regions where temperatures have increased
B)  often the result of overgrazing and drought
C)  the natural movement of deserts advancing into new regions due to shifts in wind direction
D)  a natural process of succession that cycles from deserts to prairies to forests to desertsE) B) and D)
F) None of the above

Exam 13: Land Use

Correct Answer
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All of the following would generally increase erosion except_____________ .

Correct Answer
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The world's urban populations are __________

Correct Answer
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Which of the following is the largest city in the world?

Correct Answer
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Discuss the major environmental impacts of raising livestock for food.

To feed a growing population,it would be most energetically efficient for people to eat more ________.

Correct Answer
verified

Overgrazing by cattle primarily contributes to desertification by __________.

Correct Answer
verified

Correct Answer
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The Conservation Reserve Program pays farmers to _______.

Correct Answer
verified

The rising global demand for food has recently been met by__________ .

Correct Answer
verified

-According to the figure,it requires roughly_____________ times more feed input to produce 1 kg of eggs than 1 kg of milk.

Correct Answer
verified
B

Irrigation can result in the salinization of soils because ___________.

Correct Answer
verified

Which of the following most accurately describes cropland trends in the United States and China?

Correct Answer
verified

__________is the buildup of salts in soils as a result of improper irrigation.

Correct Answer
verified

-There is a great deal of cropland but very little pasture and rangeland in_________ .

Correct Answer
verified
D

Which of the following most accurately describes population trends in the United States during the latter half of the 20th century?

Correct Answer
verified

The main cause of desertification is_____________ .

Correct Answer
verified

-Cows require a high quantity of feed because they______ .

Correct Answer
verified

Irrigation has allowed humans to grow crops in areas where natural water supplies have been limited.A major challenge that exists in these areas has been ___________.

Correct Answer
verified

Desertification is__________ .

Correct Answer
verified

Exam 13: Land Use

Correct AnswerverifiedShow Answer

All of the following would generally increase erosion except_____________ .

Correct AnswerverifiedShow Answer

The world's urban populations are __________

Correct AnswerverifiedShow Answer

Which of the following is the largest city in the world?

Correct AnswerverifiedShow Answer

Discuss the major environmental impacts of raising livestock for food.

To feed a growing population,it would be most energetically efficient for people to eat more ________.

Correct AnswerverifiedShow Answer

Overgrazing by cattle primarily contributes to desertification by __________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The Conservation Reserve Program pays farmers to _______.

Correct AnswerverifiedShow Answer

The rising global demand for food has recently been met by__________ .

Correct AnswerverifiedShow Answer

-According to the figure,it requires roughly_____________ times more feed input to produce 1 kg of eggs than 1 kg of milk.

Correct AnswerverifiedB

Irrigation can result in the salinization of soils because ___________.

Correct AnswerverifiedShow Answer

Which of the following most accurately describes cropland trends in the United States and China?

Correct AnswerverifiedShow Answer

__________is the buildup of salts in soils as a result of improper irrigation.

Correct AnswerverifiedShow Answer

-There is a great deal of cropland but very little pasture and rangeland in_________ .

Correct AnswerverifiedD

Which of the following most accurately describes population trends in the United States during the latter half of the 20th century?

Correct AnswerverifiedShow Answer

The main cause of desertification is_____________ .

Correct AnswerverifiedShow Answer

-Cows require a high quantity of feed because they______ .

Correct AnswerverifiedShow Answer

Irrigation has allowed humans to grow crops in areas where natural water supplies have been limited.A major challenge that exists in these areas has been ___________.

Correct AnswerverifiedShow Answer

Desertification is__________ .

Correct AnswerverifiedShow Answer

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B

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D

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