AnswersCSD Summer 2026 Human GeographyTopic Test

Topic Test Answers

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26
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Agricultural lobbyists have been urging the __________ of farm subsidies.

A
continuation
B
removal
C
restructuring
D
suspension
27
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River waters that feed the Aral Sea in Asia were diverted for irrigation. Which of the following events did not result from this?

A
The Aral Sea is now just 10% of its original size.
B
Extensive desertification has occurred.
C
Fish could no longer survive because of the decreased salinity.
D
The surrounding land was contaminated.
28

The increasing price of land in the United States has resulted in an increase in the __________.

A
number of small farms
B
size of small farms
C
number of large farms
D
size of large farms
29

Organic food is the fastest-growing sector of US agriculture. Please select the best answer from the choices provided.

A
T
B
F
30

Which of the following statements about topsoil is false?

A
Topsoil forms very slowly.
B
Topsoil is full of nutrients and good for farming.
C
Topsoil can be found only on farmland.
D
Human activities can accelerate the erosion of topsoil.
31

Only certain crops are eligible for subsidies. Please select the best answer from the choices provided.

A
T
B
F
32

Analyze the map below and answer the question that follows. Image courtesy of the USDA Part of China is circled in black on the map above. Based on the map key, why is southeastern China not at risk of desertification?

Question illustration
A
Southeastern China is colored in grey, which means it already is a desert.
B
Southeastern China is colored in blue, which means it is cold year-round.
C
Southeastern China is colored in green, which means it has a humid climate that regulates environmental and ecological changes, preventing desertification.
D
Southeastern China is colored in white, which means it is mostly ice year-round; icy climates have so much rain that it’s impossible for the land to become dry.
33

Which of the following statements best summarizes the results of scientific studies on the nutritional value of organically grown food?

A
Studies have shown organically grown food to be superior to conventionally grown food.
B
Studies have shown organically grown food to be inferior to conventionally grown food.
C
Studies have shown there is no nutritional difference between organically grown food and conventionally grown food.
D
Studies have been inconclusive regarding the nutritional value of organically grown food and conventionally grown food.
34

Which of the following statements best characterizes Europe’s stance on genetically modified (GM) food?

A
France and Spain have been leaders in developing genetically modified strawberries.
B
The use of genetically modified agriculture is much more advanced in Europe than in the United States.
C
European countries have not shown any interest in genetic modification research and development.
D
Many European nations considered banning the import and production of GM foods in 2010.
35

What is the difference between bioengineered crops and genetically modified crops?

A
These two terms mean the same thing and describe plants that are created by additions or deletions to DNA.
B
Bioengineered crops are created through natural cross-pollination, while genetically modified crops are created by additions or deletions to DNA.
C
Genetically modified crops are created through natural cross-pollination, while bioengineered crops are created by additions or deletions to DNA.
D
These two terms mean the same thing and describe plants that were created during the Green Revolution.
36

Which of the following statements about bioengineered foods is false?

A
Their DNA has been modified.
B
They have been genetically modified.
C
They were developed during the Green Revolution.
D
Genetic material from another organisms is sometimes added.
37

What percent of all farms in the US are small family farms?

A
30%
B
50%
C
70%
D
90%
38

Overgrazing, overfarming, and the diversion of water for irrigation are significant causes of __________.

A
deforestation
B
desertification
C
decreased agricultural production
D
shifting cultivation
39

One of the results of the 2010 Gulf of Mexico oil spill is the threat to various species in the gulf’s ecosystem; it disturbed and, in some cases, forever altered the __________ of the Gulf Coast.

A
biodiversity
B
agriculture
C
deforestation
D
desertification
40

Which of the following is not a step people can take to reduce their risk of pesticide exposure?

A
Wash all produce with a brush, or peel fruits and vegetables before eating them.
B
Buy only organic produce.
C
Buy organic varieties of foods that are at a high risk for pesticides and conventional varieties for those at a lower risk.
D
Buy the cheapest fruits and vegetables available.
41

More than half of all government subsidies go to farmers whose family income __________.

A
is below the poverty level
B
is less than the national average income
C
is between $100,000 and 200,000 per year
D
is more than $200,000 per year
42

Farms owned by retirees who no longer cultivate crops are __________.

A
always considered small family farms regardless of acreage
B
considered small family farms if they are less than 1,000 acres
C
considered small family farms if they are less than 2,500 acres
D
not counted in the number of US farms because the owners are no longer farming
43

Foreign logging companies have increased operations in eastern Russia because they are able to use cheaper labor and reduce costs. Several animals’ habitats are threatened by this activity. Which of the following is a negative result of this deforestation?

A
The Siberian tiger is losing its habitat.
B
The companies are replacing the logged trees.
C
The loggers want to find more locations to work cheaply.
D
Russia is trying to make work easier by improving snow-removal methods.

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