Question 1

Briefly describe the carbon cycle.

Accepted Answer

The carbon cycle is the movement of carbon among the atmosphere, hydrosphere, biosphere, and lithosphere as a result of processes such as photosynthesis and respiration, sedimentation, weathering, and fossil-fuel combustion
In the carbon cycle, carbon in the form of atmospheric carbon dioxide (CO₂) is incorporated into carbohydrates in plant tissues through photosynthesis. Animals consume plants and use the plant carbohydrates for their own life processes. Carbon is stored in biomass and animals. Through respiration, carbon is returned to the atmosphere as CO₂. It is also added to the atmosphere by the
combustion of fossil fuels. These three processes - photosynthesis, respiration, and combustion help cycle carbon and oxygen back and forth between living things and the environment.

Question 2

Which of the following is the reason for the lower levels of water in the Lake Mead reservoir since 2000?

Accepted Answer

A)  Over harvesting in Nevada 
B)  Deforestation 
C)  Drought 
D)  Too much government regulation 
E)  Illegal diversion to Mexico 
A)  Over harvesting in Nevada 
B)  Deforestation 
C)  Drought 
D)  Too much government regulation 
E)  Illegal diversion to Mexico C

Question 3

Carbon dioxide concentrations in the Northern hemisphere fall from spring through autumn as carbon is taken up in growing plants, and rise through the winter as organic matter decays.

Accepted Answer

A) True 
 B)False  True

Question 4

As a rough rule of thumb, about ________ of the energy consumed as food at a given food chain level is converted to new biomass, and the remaining is respired and dissipated as heat.

Accepted Answer

A)  10 percent 
B)  20 percent 
C)  30 percent 
D)  40 percent 
E)  50 percent 
A)  10 percent 
B)  20 percent 
C)  30 percent 
D)  40 percent 
E)  50 percent

Question 5

Generally, evapotranspiration depends on two factors. These are:

Accepted Answer

A)  Water must be available for plants to transpire and the air cannot be saturated with humidity. 
B)  Evaporation must be zero and the air must be saturated. 
C)  Transpiration must not be present and evaporation must be determined to be below 10 percent. 
D)  Water must be available for plants to transpire and the air must be saturated with moisture. 
E)  The roots must be able to provide water through osmosis and the air must be saturated. 
A)  Water must be available for plants to transpire and the air cannot be saturated with humidity. 
B)  Evaporation must be zero and the air must be saturated. 
C)  Transpiration must not be present and evaporation must be determined to be below 10 percent. 
D)  Water must be available for plants to transpire and the air must be saturated with moisture. 
E)  The roots must be able to provide water through osmosis and the air must be saturated.

Question 6

Human activity has not affected most parts of the global biosphere, and has helped most biomes become healthier.

Accepted Answer

A) True 
 B)False

Question 7

Carnivores (secondary consumers) derive their energy from other animals and not directly from plants.

Accepted Answer

A) True 
 B)False

Question 8

Forests dominate semiarid mid-latitude areas with hot summers, cold winters, and moderate rainfall.

Accepted Answer

A) True 
 B)False

Question 9

Briefly describe the nitrogen cycle.

Accepted Answer

In the nitrogen cycle nitrogen is taken

Question 10

Which of the following is not one of the standard soil horizons?

Accepted Answer

A)  A horizon 
B)  O horizon 
C)  C horizon 
D)  B horizon 
E)  D horizon 
A)  A horizon 
B)  O horizon 
C)  C horizon 
D)  B horizon 
E)  D horizon

Question 11

If a substance accumulates in an animal rather than being broken down, then at each trophic level the concentration of that pesticide increases in a process called ________.

Accepted Answer

A)  eutrophication 
B)  biomagnification 
C)  biodeabsorption 
D)  bioabsorption 
E)  web disruptors 
A)  eutrophication 
B)  biomagnification 
C)  biodeabsorption 
D)  bioabsorption 
E)  web disruptors

Question 12

Both the nitrogen and phosphorus cycles have been heavily modified by humans, with profound effects on ecosystems.

Accepted Answer

A) True 
 B)False

Question 13

Photosynthesis rates are greatest in areas that have ample moisture, warm temperatures, and abundant nutrients.

Accepted Answer

A) True 
 B)False

Question 14

Desertification, a process by which semiarid vegetation and soil become more desert-like as a result of human use, has occurred in semiarid lands around the world.

Accepted Answer

A) True 
 B)False

Question 15

Actual evapotranspiration is the amount of water that would be evaporated if it were available.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is NOT one of the ways in which water cycles through the atmosphere, lithosphere and hydrosphere?

Accepted Answer

A)  evaporation 
B)  condensation 
C)  precipitation 
D)  runoff 
E)  frost action 
A)  evaporation 
B)  condensation 
C)  precipitation 
D)  runoff 
E)  frost action

Question 17

Briefly describe the hydrologic cycle.

Accepted Answer

Hy hydrologic cycle is the movement of w

Question 18

Although the atmosphere is powerful in controlling weather and climate, it contains ________ percent of all of the world's water.

Accepted Answer

A)  0.001 
B)  0.01 
C)  0.1 
D)  1 
E)  10 
A)  0.001 
B)  0.01 
C)  0.1 
D)  1 
E)  10

Question 19

Humans fix Nitrogen into the soil by ________.

Accepted Answer

A)  applying fertilizer 
B)  clearing the land 
C)  planting large tracts of land with corn 
D)  applying calcium carbonate 
E)  using fossil fuels 
A)  applying fertilizer 
B)  clearing the land 
C)  planting large tracts of land with corn 
D)  applying calcium carbonate 
E)  using fossil fuels

Question 20

Deer and lions are good examples of ________.

Accepted Answer

A)  producers 
B)  consumers 
C)  decomposers 
D)  bioaccumulators 
E)  biomagnifiers 
A)  producers 
B)  consumers 
C)  decomposers 
D)  bioaccumulators 
E)  biomagnifiers

Briefly describe the carbon cycle.

Which of the following is the reason for the lower levels of water in the Lake Mead reservoir since 2000?

Carbon dioxide concentrations in the Northern hemisphere fall from spring through autumn as carbon is taken up in growing plants, and rise through the winter as organic matter decays.

As a rough rule of thumb, about ________ of the energy consumed as food at a given food chain level is converted to new biomass, and the remaining is respired and dissipated as heat.

Generally, evapotranspiration depends on two factors. These are:

Human activity has not affected most parts of the global biosphere, and has helped most biomes become healthier.

Carnivores (secondary consumers) derive their energy from other animals and not directly from plants.

Forests dominate semiarid mid-latitude areas with hot summers, cold winters, and moderate rainfall.

Briefly describe the nitrogen cycle.

Which of the following is not one of the standard soil horizons?

If a substance accumulates in an animal rather than being broken down, then at each trophic level the concentration of that pesticide increases in a process called ________.

Both the nitrogen and phosphorus cycles have been heavily modified by humans, with profound effects on ecosystems.

Photosynthesis rates are greatest in areas that have ample moisture, warm temperatures, and abundant nutrients.

Desertification, a process by which semiarid vegetation and soil become more desert-like as a result of human use, has occurred in semiarid lands around the world.

Actual evapotranspiration is the amount of water that would be evaporated if it were available.

Which of the following is NOT one of the ways in which water cycles through the atmosphere, lithosphere and hydrosphere?

Briefly describe the hydrologic cycle.

Although the atmosphere is powerful in controlling weather and climate, it contains ________ percent of all of the world's water.

Humans fix Nitrogen into the soil by ________.

Deer and lions are good examples of ________.

Thinking Geographically

Weather, Climate, and Climate Change

Landforms

Population

Migration

Languages and Religion

Political Geography

Development

Food and Agriculture

Industry

Services and Settlements

Urban Patterns

Resources

Filters

Exam 4: Biosphere

Briefly describe the carbon cycle.

Which of the following is the reason for the lower levels of water in the Lake Mead reservoir since 2000?

Carbon dioxide concentrations in the Northern hemisphere fall from spring through autumn as carbon is taken up in growing plants, and rise through the winter as organic matter decays.

As a rough rule of thumb, about ________ of the energy consumed as food at a given food chain level is converted to new biomass, and the remaining is respired and dissipated as heat.

Generally, evapotranspiration depends on two factors. These are:

Human activity has not affected most parts of the global biosphere, and has helped most biomes become healthier.

Carnivores (secondary consumers) derive their energy from other animals and not directly from plants.

Forests dominate semiarid mid-latitude areas with hot summers, cold winters, and moderate rainfall.

Briefly describe the nitrogen cycle.

Which of the following is not one of the standard soil horizons?

If a substance accumulates in an animal rather than being broken down, then at each trophic level the concentration of that pesticide increases in a process called ________.

Both the nitrogen and phosphorus cycles have been heavily modified by humans, with profound effects on ecosystems.

Photosynthesis rates are greatest in areas that have ample moisture, warm temperatures, and abundant nutrients.

Desertification, a process by which semiarid vegetation and soil become more desert-like as a result of human use, has occurred in semiarid lands around the world.

Actual evapotranspiration is the amount of water that would be evaporated if it were available.

Which of the following is NOT one of the ways in which water cycles through the atmosphere, lithosphere and hydrosphere?

Briefly describe the hydrologic cycle.

Although the atmosphere is powerful in controlling weather and climate, it contains ________ percent of all of the world's water.

Humans fix Nitrogen into the soil by ________.

Deer and lions are good examples of ________.

Thinking Geographically

Weather, Climate, and Climate Change

Landforms

Population

Migration

Languages and Religion

Political Geography

Development

Food and Agriculture

Industry

Services and Settlements

Urban Patterns

Resources

Filters