Question 1

Which one of the following marine ecosystems would be expected to have the lowest species diversity and primary production per unit area?

Accepted Answer

A)  oligotrophic oceans
B)  upwelling regions of ocean
C)  coral reefs
D)  estuaries
E)  intertidal zoneF) B) and E)
G) C) and D)

Question 2

If the energy of the sun no longer reached Earth,the primary productivity of which of the following ecosystems would be least affected?

Accepted Answer

A)  deep sea hydrothermal vent
B)  temperate rain forest
C)  desert
D)  taiga
E)  coral reefF) B) and E)
G) C) and E) A

Question 3

Tropical climates are warmer than temperate climates because

Accepted Answer

A)  temperate climates have more mountains and thus more snow causing the landmasses to warm slower.
B)  tropical climates have more vegetation and thus can absorb more heat.
C)  temperate climates are closer to the poles and the polar surfaces cause a reduction in heat gain.
D)  tropical climates receive the sun's rays at an almost perpendicular angle; since Earth is a sphere,the temperate climates receive the sun's rays at a much steeper incidence thus spreading the radiation over a broader area.
E)  tropical climates receive the sun's rays at a much steeper incidence thus spreading the radiation over a broader area and causing the tropics to be warmer while the temperate climates receive the sun's rays at an almost perpendicular angle,which causes some areas to be warm and other areas to be cold.F) A) and D)
G) A) and E) D

Question 4

Your biology professor takes the class on a field trip to a local lake.You spend an hour studying the lake and writing down all observations.You hypothesize that the lake is oligotrophic.Which observations would support this hypothesis? Check all that apply.

Accepted Answer

A)  The shoreline is mostly rock and sand with very little vegetative matter.
B)  The lake has extensive aquatic plant beds.
C)  The lake has little planktonic growth.
D)  The bottom of the lake is easily visible.
E)  An oxygen probe reveals low oxygen content in the water.F) None of the above
G) B) and E)

Question 5

Which of the following adversely affects the ozone layer?

Accepted Answer

A)  chlorofluorocarbons
B)  greenhouse gases
C)  oil
D)  coal and natural gas
E)  plasticsF) B) and C)
G) B) and D) A

Question 6

Which of following statements about the causes and effects of global warming are accurate? Check all that apply.

Accepted Answer

A)  The effects of global warming will be uniform throughout the world.
B)  In addition to carbon dioxide,other greenhouse gases include methane and nitrous oxide.
C)  Melting of the Arctic permafrost will slow the process of global warming because of new plant growth in those areas.
D)  The effects of global warming can be measured today.
E)  Carbon dioxide absorbs short wavelength radiant energy better than long wavelength radiant energy.F) A) and B)
G) A) and C)

Question 7

Which of the following are examples of diffuse pollution? Check all that apply.

Accepted Answer

A)  chemicals released from a factory waste pipe
B)  wind-borne debris blowing out to sea
C)  pet waste
D)  oil leaking from a cargo ship
E)  oil that washes off of roadsF) A) and C)
G) B) and E)

Question 8

Photosynthetic organisms of the open oceans are confined to the upper

Accepted Answer

A)  two hundred millimeters.
B)  two hundred centimeters.
C)  two hundred meters.
D)  two hundred kilometers.
E)  two thousand kilometers.F) C) and D)
G) A) and E)

Question 9

Drifting freely in the upper,well-illuminated waters of the ocean,a diverse biological community exists,primarily consisting of microscopic organisms called

Accepted Answer

A)  phytoplankton.
B)  archaeans.
C)  detritus.
D)  benthos.
E)  bacteria.F) B) and D)
G) All of the above

Question 10

While visiting the South Island of New Zealand,you notice that conditions vary sharply across the island.The West Coast is very wet and receives between 600 and 1600 mm of rainfall per year,while the East Coast only receives about 640 mm of rain per year and is very dry.What best explains this regional difference in precipitation?

Accepted Answer

A)  Proximity to Antarctica.
B)  The absence of inland lakes.
C)  The presence of a large river along the West Coast.
D)  The presence of mountains along the West Coast.
E)  Latitudinal differences between the East and West Coasts.F) D) and E)
G) C) and D)

Question 11

Which of the following are characteristics of biomes? Check all that apply.

Accepted Answer

A)  A biome is a large geographical area with distinctive plant and animal groups.
B)  Biomes are only located at certain longitudes and latitudes.
C)  The climate and geography of a region determines what type of biome can exist in that region.
D)  Each biome consists of only one type of ecosystem.
E)  Temperate evergreen forest is one of the major biomes.F) A) and E)
G) C) and D)

Question 12

During an ecology field trip to a lake,your professor asks you to take temperature readings at various depths and record your data.At 5 meters,you note a temperature of 25°C and at 10 meters you record a temperature of 10°C.Readings at 20 meters and below stay fairly consistent around 8°C.The temperature readings of 25°C,10°C,and 8°C represent the

Accepted Answer

A)  epilimnion,thermocline,and hypolimnion.
B)  epilimnion,hypolimnion,and thermocline.
C)  hypolimnion,epilimnion,and thermocline.
D)  hypolimnion,thermocline,and epilimnion.
E)  thermocline,epilimnion,and hypolimnion.F) A) and C)
G) All of the above

Question 13

Destruction of which biome would result in the greatest loss of biodiversity?

Accepted Answer

A)  desert
B)  grassland
C)  savanna
D)  taiga forest
E)  tropical rain forestF) C) and D)
G) None of the above

Question 14

Which of the following statements about the consequences of global warming are true? Check all that apply.

Accepted Answer

A)  The rate of global warming may be too great for populations to be able to adapt through natural selection.
B)  Rising sea levels will be a consequence of global warming.
C)  Global warming will cause a decrease in the incidence of diseases caused by mosquitoes.
D)  The frequency of El Niño events may increase as a consequence of global warming.
E)  Agricultural production will increase.F) A) and D)
G) B) and D)

Question 15

CO2 and other gases,which absorb the longer wavelengths of infrared light and radiated heat from Earth,are responsible for causing the

Accepted Answer

A)  ozone layer depletion.
B)  greenhouse effect.
C)  decreased biodiversity.
D)  acid rain.E) A) and B)
F) All of the above

Question 16

If the tilt of Earth's axis relative to its plane of orbit was increased to 30 degrees,the seasons in Boston,Massachusetts would become less distinct.

Accepted Answer

A) True 
 B)False

Question 17

Which statements about acid precipitation are accurate? Check all that apply.

Accepted Answer

A)  Acid rain is intermediate between point-source and diffuse pollution.
B)  Mercury is a pollutant that often accompanies acid precipitation.
C)  Acid precipitation is a severe problem in areas with soils having high buffering capacity.
D)  Acid precipitation can affect aquatic ecosystems.
E)  Acid precipitation can affect forests,weakening the trees and making them more susceptible to disease.F) B) and E)
G) A) and D)

Question 18

Which of the following statements about ozone depletion are true? Check all that apply.

Accepted Answer

A)  Concentrations of ozone-depleting chemicals continue to rise in the atmosphere.
B)  Chlorofluorocarbons (CFCs) are the major cause of ozone depletion.
C)  Free chlorine in the upper atmosphere catalyzes the conversion of O3 into O2.
D)  Weather conditions also influence the size of the ozone hole in the stratosphere.
E)  CFCs are acted on by conditions in the stratosphere to form diatomic chlorine (Cl2) .F) C) and D)
G) A) and C)

Question 19

An old farm that has been abandoned for 65 years is being sold to develop the land for housing.You attend a town meeting and describe this as a bad idea.Your evidence to support this claim relates to the removal of trees to build the homes.You tell the crowd that removal of the trees will limit the number of predators in the area,and therefore allow the local mouse population to increase,and with the mice,an increase in disease.Is basis of your argument true or false?

Accepted Answer

A) True 
 B)False

Question 20

Biomes are broad regional areas with defined flora and fauna.Which one of the following choices correctly identifies the biomes shown plotted in the graph of precipitation versus temperature?

Accepted Answer

A)  Tropical Rain forest = 1; Desert = 2; Tundra = 3; Grassland = 4
B)  Tropical Rain forest = 1; Desert = 3; Tundra = 4; Grassland = 2
C)  Tropical Rain forest = 3; Desert = 4; Tundra = 1; Grassland = 2
D)  Tropical Rain forest = 3; Desert = 1; Tundra = 2; Grassland = 3E) A) and B)
F) A) and C)

Exam 57: The Biosphere and Human Impacts

Which one of the following marine ecosystems would be expected to have the lowest species diversity and primary production per unit area?

Correct Answer
verified

If the energy of the sun no longer reached Earth,the primary productivity of which of the following ecosystems would be least affected?

Correct Answer
verified
A

Tropical climates are warmer than temperate climates because

Correct Answer
verified
D

Your biology professor takes the class on a field trip to a local lake.You spend an hour studying the lake and writing down all observations.You hypothesize that the lake is oligotrophic.Which observations would support this hypothesis? Check all that apply.

Correct Answer
verified

Which of the following adversely affects the ozone layer?

Correct Answer
verified
A

Which of following statements about the causes and effects of global warming are accurate? Check all that apply.

Correct Answer
verified

Which of the following are examples of diffuse pollution? Check all that apply.

Correct Answer
verified

Photosynthetic organisms of the open oceans are confined to the upper

Correct Answer
verified

Drifting freely in the upper,well-illuminated waters of the ocean,a diverse biological community exists,primarily consisting of microscopic organisms called

Correct Answer
verified

Correct Answer
verified

Which of the following are characteristics of biomes? Check all that apply.

Correct Answer
verified

Correct Answer
verified

Destruction of which biome would result in the greatest loss of biodiversity?

Correct Answer
verified

Which of the following statements about the consequences of global warming are true? Check all that apply.

Correct Answer
verified

CO₂ and other gases,which absorb the longer wavelengths of infrared light and radiated heat from Earth,are responsible for causing the

Correct Answer
verified

If the tilt of Earth's axis relative to its plane of orbit was increased to 30 degrees,the seasons in Boston,Massachusetts would become less distinct.

Correct Answer
verified

Which statements about acid precipitation are accurate? Check all that apply.

Correct Answer
verified

Which of the following statements about ozone depletion are true? Check all that apply.

Correct Answer
verified

Correct Answer
verified

Biomes are broad regional areas with defined flora and fauna.Which one of the following choices correctly identifies the biomes shown plotted in the graph of precipitation versus temperature?

Correct Answer
verified

Exam 57: The Biosphere and Human Impacts

Which one of the following marine ecosystems would be expected to have the lowest species diversity and primary production per unit area?

Correct AnswerverifiedShow Answer

If the energy of the sun no longer reached Earth,the primary productivity of which of the following ecosystems would be least affected?

Correct AnswerverifiedA

Tropical climates are warmer than temperate climates because

Correct AnswerverifiedD

Your biology professor takes the class on a field trip to a local lake.You spend an hour studying the lake and writing down all observations.You hypothesize that the lake is oligotrophic.Which observations would support this hypothesis? Check all that apply.

Correct AnswerverifiedShow Answer

Which of the following adversely affects the ozone layer?

Correct AnswerverifiedA

Which of following statements about the causes and effects of global warming are accurate? Check all that apply.

Correct AnswerverifiedShow Answer

Which of the following are examples of diffuse pollution? Check all that apply.

Correct AnswerverifiedShow Answer

Photosynthetic organisms of the open oceans are confined to the upper

Correct AnswerverifiedShow Answer

Drifting freely in the upper,well-illuminated waters of the ocean,a diverse biological community exists,primarily consisting of microscopic organisms called

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following are characteristics of biomes? Check all that apply.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Destruction of which biome would result in the greatest loss of biodiversity?

Correct AnswerverifiedShow Answer

Which of the following statements about the consequences of global warming are true? Check all that apply.

Correct AnswerverifiedShow Answer

CO2 and other gases,which absorb the longer wavelengths of infrared light and radiated heat from Earth,are responsible for causing the

Correct AnswerverifiedShow Answer

If the tilt of Earth's axis relative to its plane of orbit was increased to 30 degrees,the seasons in Boston,Massachusetts would become less distinct.

Correct AnswerverifiedShow Answer

Which statements about acid precipitation are accurate? Check all that apply.

Correct AnswerverifiedShow Answer

Which of the following statements about ozone depletion are true? Check all that apply.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Biomes are broad regional areas with defined flora and fauna.Which one of the following choices correctly identifies the biomes shown plotted in the graph of precipitation versus temperature?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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A

Correct Answer
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D

Correct Answer
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A

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

CO₂ and other gases,which absorb the longer wavelengths of infrared light and radiated heat from Earth,are responsible for causing the

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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