Question 1

To increase crop yields,farmers use crossbreeding,genetic engineering,and polycultures of perennial crops.

Accepted Answer

A) True 
 B)False

Question 2

Reducing or eliminating tillage,managing irrigation to reduce runoff,and keeping the soil covered with plants or mulch are among the numerous practices that have been developed to deter _________________________.

Accepted Answer

The answer of Reducing or eliminating tillage,managing irrigation to reduce...

Question 3

____________________ is a dynamic system that,through the integration of trees on farmland and rangeland,diversifies and sustains production with increased social,economic,and environmental benefits for land users at all levels.

Accepted Answer

Agroforest

Question 4

What is one major environmental effect of raising livestock?

Accepted Answer

A)  reduced erosion 
B)  reduced fossil fuel use 
C)  water contamination 
D)  bad smells 
A)  reduced erosion 
B)  reduced fossil fuel use 
C)  water contamination 
D)  bad smells

Question 5

What was implemented in the second green revolution?

Accepted Answer

A)  a dry climate 
B)  no pesticides 
C)  varieties of wild plants 
D)  inorganic fertilizer 
A)  a dry climate 
B)  no pesticides 
C)  varieties of wild plants 
D)  inorganic fertilizer

Question 6

What happened to global per capita meat production between 1961 and 2013?

Accepted Answer

A)  it decreased fivefold 
B)  it remained steady 
C)  it doubled 
D)  it increased fivefold 
A)  it decreased fivefold 
B)  it remained steady 
C)  it doubled 
D)  it increased fivefold

Question 7

One way to develop sustainable agriculture is to reduce poverty.

Accepted Answer

A) True 
 B)False

Question 8

What is over nutrition?

Accepted Answer

A)  food energy intake exceeds energy use 
B)  food energy intake is lower than the energy used 
C)  food intake is high in fresh vegetables 
D)  food intake is high in fibre 
A)  food energy intake exceeds energy use 
B)  food energy intake is lower than the energy used 
C)  food intake is high in fresh vegetables 
D)  food intake is high in fibre

Question 9

What is one outcome of conservation tillage?

Accepted Answer

A)  It increases labour costs. 
B)  It decreases erosion. 
C)  It increases energy consumption. 
D)  It accelerates water loss from the soil. 
A)  It increases labour costs. 
B)  It decreases erosion. 
C)  It increases energy consumption. 
D)  It accelerates water loss from the soil.

Question 10

Which statement best describes energy use in agriculture?

Accepted Answer

A)  Industrialized agriculture is more energy efficient than subsistence agriculture. 
B)  The amount of fossil fuel energy required to grow most plants is less than the amount of food energy produced. 
C)  Raising animals for food is more energy efficient than raising plants. 
D)  About 2 units of nonrenewable fossil fuel energy are needed to put 1 unit of energy on the table. 
A)  Industrialized agriculture is more energy efficient than subsistence agriculture. 
B)  The amount of fossil fuel energy required to grow most plants is less than the amount of food energy produced. 
C)  Raising animals for food is more energy efficient than raising plants. 
D)  About 2 units of nonrenewable fossil fuel energy are needed to put 1 unit of energy on the table.

Question 11

What are some of the disadvantages of aquaculture?

Accepted Answer

large inputs of land,feed,and water need

Question 12

Which term is used to describe the planting of crops in alternating rows of close-growing plants?

Accepted Answer

A)  alley cropping 
B)  crop rotation 
C)  erosion 
D)  strip cropping 
A)  alley cropping 
B)  crop rotation 
C)  erosion 
D)  strip cropping

Question 13

Since 1950,most of the increase in global food production has come from increased yields per unit area of cropland in a process called the _________________________________.

Accepted Answer

The answer of Since 1950,most of the increase in global...

Question 14

Which statement best describes alley cropping?

Accepted Answer

A)  Special tillers are required to prevent the topsoil from being disturbed. 
B)  Rows are plowed across the slope. 
C)  Terraces are built to prevent swift water runoff. 
D)  Crops are planted between hedgerows of trees or shrubs that are fruit bearing or used for fuelwood. 
A)  Special tillers are required to prevent the topsoil from being disturbed. 
B)  Rows are plowed across the slope. 
C)  Terraces are built to prevent swift water runoff. 
D)  Crops are planted between hedgerows of trees or shrubs that are fruit bearing or used for fuelwood.

Question 15

What is the term for plowing,breaking up,and smoothing the soil in the autumn in order to facilitate planting in the spring?

Accepted Answer

A)  conservation tillage 
B)  conventional tillage 
C)  terracing 
D)  contour farming 
A)  conservation tillage 
B)  conventional tillage 
C)  terracing 
D)  contour farming

Question 16

What is one possible result of irrigation?

Accepted Answer

A)  waterlogging of the soil 
B)  low soil pH 
C)  high nutrient levels in the soil 
D)  high soil pH 
A)  waterlogging of the soil 
B)  low soil pH 
C)  high nutrient levels in the soil 
D)  high soil pH

Question 17

The second green revolution involves introducing fast-growing dwarf varieties of rice and wheat.

Accepted Answer

A) True 
 B)False

Question 18

When is a person considered malnourished?

Accepted Answer

A)  when they suffer from deficiencies of key nutrients 
B)  when they eat fewer than the basic minimum number of daily calories 
C)  when they eat too much junk food 
D)  when there is not enough meat in their diet 
A)  when they suffer from deficiencies of key nutrients 
B)  when they eat fewer than the basic minimum number of daily calories 
C)  when they eat too much junk food 
D)  when there is not enough meat in their diet

Question 19

Although highly efficient,____________________ destroy mangrove forests,produce large amounts of waste,and demand large inputs of land,feed,and water.

Accepted Answer

The answer of Although highly efficient,____________________ destroy mangrove forests,produce large...

Question 20

What is a projected disadvantage that could result from the genetic modification of food plants?

Accepted Answer

A)  The plants may require more fertilizer. 
B)  The plants may require greater water inputs. 
C)  The plants may promote the appearance of herbicide-resistant weeds. 
D)  The plants may require less water. 
A)  The plants may require more fertilizer. 
B)  The plants may require greater water inputs. 
C)  The plants may promote the appearance of herbicide-resistant weeds. 
D)  The plants may require less water.

Exam 14: Food and Soil Resources

To increase crop yields,farmers use crossbreeding,genetic engineering,and polycultures of perennial crops.

Reducing or eliminating tillage,managing irrigation to reduce runoff,and keeping the soil covered with plants or mulch are among the numerous practices that have been developed to deter _________________________.

____________________ is a dynamic system that,through the integration of trees on farmland and rangeland,diversifies and sustains production with increased social,economic,and environmental benefits for land users at all levels.

What is one major environmental effect of raising livestock?

What was implemented in the second green revolution?

What happened to global per capita meat production between 1961 and 2013?

One way to develop sustainable agriculture is to reduce poverty.

What is over nutrition?

What is one outcome of conservation tillage?

Which statement best describes energy use in agriculture?

What are some of the disadvantages of aquaculture?

Which term is used to describe the planting of crops in alternating rows of close-growing plants?

Since 1950,most of the increase in global food production has come from increased yields per unit area of cropland in a process called the _________________________________.

Which statement best describes alley cropping?

What is the term for plowing,breaking up,and smoothing the soil in the autumn in order to facilitate planting in the spring?

What is one possible result of irrigation?

The second green revolution involves introducing fast-growing dwarf varieties of rice and wheat.

When is a person considered malnourished?

Although highly efficient,____________________ destroy mangrove forests,produce large amounts of waste,and demand large inputs of land,feed,and water.

What is a projected disadvantage that could result from the genetic modification of food plants?

Environmental Problems: an Introduction and Overview

Environmental History: Learning From the Past

Science, systems, matter, and Energy

Ecosystems: What Are They, and How Do They Work

Evolution and Biodiversity

Climate and Terrestrial Biodiversity

Aquatic Biodiversity

Community Ecology

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Applying Population Ecology: the Human Population

Sustaining Terrestrial Biodiversity: Managing and Protecting Ecosystems

Sustaining Biodiversity: the Species Approach

Sustaining Aquatic Biodiversity

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy Resources

Energy Efficiency and Renewable Energy

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Pest Management

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