Question 1

An increase in the surface temperature of the Earth caused by heat-trapping gases in the atmosphere is known as

Accepted Answer

A)  the greenhouse effect. 
B)  the biome effect. 
C)  bioremediation. 
D)  desertification. 
E)  the nursery effect. 
A)  the greenhouse effect. 
B)  the biome effect. 
C)  bioremediation. 
D)  desertification. 
E)  the nursery effect. A

Question 2

Forests are expanding and deserts are shrinking worldwide.

Accepted Answer

A) True 
 B)False  False

Question 3

The greatest threat to the endangered great spotted kiwi of New Zealand is predation.

Accepted Answer

A) True 
 B)False  True

Question 4

Particulates are

Accepted Answer

A)  found in streams of water. 
B)  carried by air. 
C)  not a concern of air quality. 
D)  approximately 1 cm. in diameter. 
E)  all nonliving. 
A)  found in streams of water. 
B)  carried by air. 
C)  not a concern of air quality. 
D)  approximately 1 cm. in diameter. 
E)  all nonliving.

Question 5

The ozone layer absorbs much of the harmful UV wavelengths of light that would otherwise reach Earth.

Accepted Answer

A) True 
 B)False

Question 6

Conservation biologists breed some endangered species like the panda bear in captivity.Which is the most likely reason that panda populations in the wild are still threatened?

Accepted Answer

A)  Not enough animals can be bred to release into the wild. 
B)  Their environment is polluted. 
C)  Loss of habitat has occurred. 
D)  The wild pandas cannot breed. 
E)  Their population density is too high. 
A)  Not enough animals can be bred to release into the wild. 
B)  Their environment is polluted. 
C)  Loss of habitat has occurred. 
D)  The wild pandas cannot breed. 
E)  Their population density is too high.

Question 7

One key to reversing environmental decline is to slow the growth of the human population.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is NOT an invasive species?

Accepted Answer

A)  hydrilla in freshwater 
B)  European starlings in North America 
C)  the bison in the North American plains 
D)  the marine toad in Florida 
E)  gypsy moth caterpillars in North America 
A)  hydrilla in freshwater 
B)  European starlings in North America 
C)  the bison in the North American plains 
D)  the marine toad in Florida 
E)  gypsy moth caterpillars in North America

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

Greenhouse gases block

Accepted Answer

A)  carbon dioxide from escaping Earth's atmosphere. 
B)  oxygen from escaping Earth's atmosphere. 
C)  UV wavelengths from reaching Earth's surface. 
D)  UV wavelengths from escaping Earth's atmosphere. 
E)  heat from escaping Earth's atmosphere. 
A)  carbon dioxide from escaping Earth's atmosphere. 
B)  oxygen from escaping Earth's atmosphere. 
C)  UV wavelengths from reaching Earth's surface. 
D)  UV wavelengths from escaping Earth's atmosphere. 
E)  heat from escaping Earth's atmosphere.

Question 11

Since the 1950s,________ of the ocean's large predatory fishes have disappeared.

Accepted Answer

A)  20% 
B)  50% 
C)  90% 
D)  70% 
E)  1% 
A)  20% 
B)  50% 
C)  90% 
D)  70% 
E)  1%

Question 12

The pH of acid deposition occurring in the eastern United States is about

Accepted Answer

A)  4.6. 
B)  5.6. 
C)  6.4. 
D)  7.0. 
E)  8.4. 
A)  4.6. 
B)  5.6. 
C)  6.4. 
D)  7.0. 
E)  8.4.

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

Any chemical,physical,or biological change in the environment that harms living organisms is

Accepted Answer

A)  nitrification. 
B)  an "upwelling." 
C)  deforestation. 
D)  ozone depletion. 
E)  pollution. 
A)  nitrification. 
B)  an "upwelling." 
C)  deforestation. 
D)  ozone depletion. 
E)  pollution.

Question 15

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

Accepted Answer

A)  carbon dioxide 
B)  methane 
C)  nitrous oxide 
D)  oxygen 
E)  CFCs 
A)  carbon dioxide 
B)  methane 
C)  nitrous oxide 
D)  oxygen 
E)  CFCs

Question 16

What areas are most susceptible to loss of biodiversity?

Accepted Answer

A)  open ocean 
B)  locations near human activities 
C)  rain forests 
D)  temperate forests 
E)  polar regions 
A)  open ocean 
B)  locations near human activities 
C)  rain forests 
D)  temperate forests 
E)  polar regions

Question 17

Conservation biologists study the preservation of biodiversity.

Accepted Answer

A) True 
 B)False

Question 18

In many wetlands, nonnative purple loosestrife has become the dominant plant species, often accounting for 90% of the total plant mass. The populations of cattails, canvasback ducks, and bog turtles have decreased in areas with purple loosestrife.
-Purple loosestrife are a(n)

Accepted Answer

A)  exotic species. 
B)  native species. 
C)  consumer. 
D)  parasite. 
E)  beneficial species. 
A)  exotic species. 
B)  native species. 
C)  consumer. 
D)  parasite. 
E)  beneficial species.

Question 19

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

Question 20

In addition to eutrophication in lakes,which process is caused by excess nutrients in rivers?

Accepted Answer

A)  warming of the water in the Gulf of Mexico 
B)  introduction of exotic species like Zebra mussels 
C)  the dead zone in the Gulf of Mexico 
D)  decreased plant growth 
E)  clogging of city water lines 
A)  warming of the water in the Gulf of Mexico 
B)  introduction of exotic species like Zebra mussels 
C)  the dead zone in the Gulf of Mexico 
D)  decreased plant growth 
E)  clogging of city water lines

Exam 20: Preserving Biodiversity

An increase in the surface temperature of the Earth caused by heat-trapping gases in the atmosphere is known as

Forests are expanding and deserts are shrinking worldwide.

The greatest threat to the endangered great spotted kiwi of New Zealand is predation.

Particulates are

The ozone layer absorbs much of the harmful UV wavelengths of light that would otherwise reach Earth.

Conservation biologists breed some endangered species like the panda bear in captivity.Which is the most likely reason that panda populations in the wild are still threatened?

One key to reversing environmental decline is to slow the growth of the human population.

Which of the following is NOT an invasive species?

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

Greenhouse gases block

Since the 1950s,________ of the ocean's large predatory fishes have disappeared.

The pH of acid deposition occurring in the eastern United States is about

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

Any chemical,physical,or biological change in the environment that harms living organisms is

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

What areas are most susceptible to loss of biodiversity?

Conservation biologists study the preservation of biodiversity.

In many wetlands, nonnative purple loosestrife has become the dominant plant species, often accounting for 90% of the total plant mass. The populations of cattails, canvasback ducks, and bog turtles have decreased in areas with purple loosestrife. -Purple loosestrife are a(n)

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

In addition to eutrophication in lakes,which process is caused by excess nutrients in rivers?

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