Question 1

How does damming a river destroy wetlands?

Accepted Answer

A)  Fish can no longer migrate up and down the river.
B)  Wetlands can no longer obtain nutrients from annual floods.
C)  Wetlands can no longer obtain oxygen from the flowing water of the river.
D)  Birds can no longer get to the wetlands.
E)  Increased nutrients flow into the wetlands causing eutrophication.F) All of the above
G) A) and B)

Question 2

Overexploitation is harvesting a species faster than it can reproduce.

Accepted Answer

A) True 
 B)False

Question 3

What is the benefit of biodiversity to humans?

Accepted Answer

A)  Production of oxygen for aerobic respiration to make ATP
B)  Energy
C)  All answers are correct.
D)  Variety of food sources
E)  Source of drugsF) All of the above
G) B) and D)

Question 4

The ______ in the stratosphere above Earth's surface absorbs much of the harmful UV wavelengths of light.

Accepted Answer

A)  benthic zone
B)  ozone layer
C)  cumulus clouds
D)  particulate layer
E)  profundal zoneF) C) and D)
G) C) and E)

Question 5

Why is deforestation often associated with extreme floods and mud slides?

Accepted Answer

A)  increased rain fall
B)  increased transpiration
C)  decreased nutrient absorption
D)  increased soil erosion
E)  decreased rain fallF) A) and B)
G) A) and C)

Question 6

Purple loosestrife are

Accepted Answer

A)  an exotic species.
B)  a native species.
C)  a consumer.
D)  a parasite.
E)  a beneficial species.F) A) and E)
G) B) and E)

Question 7

How is tropical deforestation linked to climate change?

Accepted Answer

A)  Burning the forests releases carbon dioxide and transpiration by trees is diminished.
B)  Burning the forests consumes oxygen and transpiration by trees is diminished.
C)  Burning the forests releases carbon dioxide and transpiration by trees is increased.
D)  Burning the forests consumes oxygen and transpiration by trees is increaseD.E) B) and C)
F) A) and B)

Question 8

If global warming continues and predictions are correct,by the end of the twenty-first century sea level on Earth will

Accepted Answer

A)  rise by 18 to 59 cm.
B)  remain the same.
C)  fall by 6 to 12 cm.
D)  rise by 190 to 125 cm.
E)  rise by 6 to 6.5 m.F) B) and C)
G) B) and D)

Question 9

Humans can survive on Earth without biodiversity.

Accepted Answer

A) True 
 B)False

Question 10

Since the Endangered Species Act of 1973 was passed,about ______ species of animals and ______ species of plants and lichens have been placed on the list of threatened or endangered species.

Accepted Answer

A)  575,750
B)  200,100
C)  1050,2375
D)  375,350
E)  20,50F) A) and B)
G) A) and C) A

Question 11

What was a disadvantage of digging canals in the Everglades?

Accepted Answer

A)  increased cropland
B)  increased flooding during hurricanes
C)  increased risk of algae blooms
D)  increased floodplain wetlands
E)  decreased freshwaterF) All of the above
G) A) and E)

Question 12

Carbon dioxide gas is not a major contributor to the greenhouse effect.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is not a "greenhouse gas"?

Accepted Answer

A)  carbon dioxide
B)  methane
C)  nitrous oxide
D)  oxygen
E)  CFCsF) B) and E)
G) C) and E)

Question 14

Commercial fisheries are increasing the harvest of smaller fish like anchovies because of ______ large predatory fishes.

Accepted Answer

A)  exotic
B)  competition with
C)  increases in
D)  pollution in
E)  overexploitation ofF) A) and C)
G) B) and D) E

Question 15

Which of the following is not one of the world's endangered species?

Accepted Answer

A)  Sumatran rhino
B)  California condor
C)  zebra mussel
D)  harlequin frog
E)  staghorn coralF) B) and E)
G) A) and B)

Question 16

In the section "Investigating Life: The Case of the Missing Frogs: Is Climate the Culprit?",what happened to temperatures in the cloud forest over the past 40 years based on Part B of the figure?

Accepted Answer

A)  Maximum temperatures increased and minimum temperatures dropped.
B)  Temperatures overall increased.
C)  Temperatures overall decreased.
D)  Temperatures were constant.
E)  Maximum temperatures dropped and minimum temperatures increased.F) A) and D)
G) D) and E)

Question 17

The ozone layer absorbs harmful ______ wavelengths of light.

Accepted Answer

A)  ultraviolet
B)  violet
C)  red
D)  blue
E)  greenF) A) and C)
G) B) and D)

Question 18

The primary cause for loss of biodiversity is

Accepted Answer

A)  predation.
B)  parasitism.
C)  genetic mutation.
D)  habitat destruction.
E)  global warming.F) B) and C)
G) A) and B)

Question 19

Release of sulfate and nitrate during the burning of coal contributes to

Accepted Answer

A)  eutrophication.
B)  acid rain.
C)  accumulation of persistent organic pollutants.
D)  loss of the ozone layer.
E)  the dead zonE.F) A) and E)
G) A) and B) B

Question 20

A worldwide loss of biodiversity is underway because of human activities.

Accepted Answer

A) True 
 B)False

Exam 20: Preserving Biodiversity

How does damming a river destroy wetlands?

Correct AnswerverifiedShow Answer

Overexploitation is harvesting a species faster than it can reproduce.

Correct AnswerverifiedShow Answer

What is the benefit of biodiversity to humans?

Correct AnswerverifiedShow Answer

The ______ in the stratosphere above Earth's surface absorbs much of the harmful UV wavelengths of light.

Correct AnswerverifiedShow Answer

Why is deforestation often associated with extreme floods and mud slides?

Correct AnswerverifiedShow Answer

Purple loosestrife are

Correct AnswerverifiedShow Answer

How is tropical deforestation linked to climate change?

Correct AnswerverifiedShow Answer

If global warming continues and predictions are correct,by the end of the twenty-first century sea level on Earth will

Correct AnswerverifiedShow Answer

Humans can survive on Earth without biodiversity.

Correct AnswerverifiedShow Answer

Since the Endangered Species Act of 1973 was passed,about ______ species of animals and ______ species of plants and lichens have been placed on the list of threatened or endangered species.

Correct AnswerverifiedA

What was a disadvantage of digging canals in the Everglades?

Correct AnswerverifiedShow Answer

Carbon dioxide gas is not a major contributor to the greenhouse effect.

Correct AnswerverifiedShow Answer

Which of the following is not a "greenhouse gas"?

Correct AnswerverifiedShow Answer

Commercial fisheries are increasing the harvest of smaller fish like anchovies because of ______ large predatory fishes.

Correct AnswerverifiedE

Which of the following is not one of the world's endangered species?

Correct AnswerverifiedShow Answer

In the section "Investigating Life: The Case of the Missing Frogs: Is Climate the Culprit?",what happened to temperatures in the cloud forest over the past 40 years based on Part B of the figure?

Correct AnswerverifiedShow Answer

The ozone layer absorbs harmful ______ wavelengths of light.

Correct AnswerverifiedShow Answer

The primary cause for loss of biodiversity is

Correct AnswerverifiedShow Answer

Release of sulfate and nitrate during the burning of coal contributes to

Correct AnswerverifiedB

A worldwide loss of biodiversity is underway because of human activities.

Correct AnswerverifiedShow Answer

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Since the Endangered Species Act of 1973 was passed,about species of animals and species of plants and lichens have been placed on the list of threatened or endangered species.

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A

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E

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B

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