Question 1

What is considered the greatest threat to the Great Lakes?

Accepted Answer

A)  the spread of alien species 
B)  the increase in commercial fishing 
C)  the dumping of raw human sewage 
D)  the increase in thermal pollution from electric power plants 
A)  the spread of alien species 
B)  the increase in commercial fishing 
C)  the dumping of raw human sewage 
D)  the increase in thermal pollution from electric power plants

Question 2

Which approach to estimating marine fish populations is the most beneficial to fish populations?

Accepted Answer

A)  commercial sustained yield 
B)  maximum sustained yield 
C)  potential sustained yield 
D)  optimum sustained yield 
A)  commercial sustained yield 
B)  maximum sustained yield 
C)  potential sustained yield 
D)  optimum sustained yield

Question 3

Which device has saved many thousands of sea turtles from shrimp trawlers?

Accepted Answer

A)  gill nets 
B)  shrimp rakers 
C)  sonic devices that scare turtles away 
D)  turtle exclusion devices 
A)  gill nets 
B)  shrimp rakers 
C)  sonic devices that scare turtles away 
D)  turtle exclusion devices

Question 4

One of the reasons for the collapse of the cod fishery in eastern Canada was that the Canadian government ignored early warnings that stocks might be in jeopardy.

Accepted Answer

A) True 
 B)False

Question 5

Which habitat do humans know little about?

Accepted Answer

A)  deep ocean basins 
B)  Antarctica 
C)  deep space 
D)  tropical rainforests 
A)  deep ocean basins 
B)  Antarctica 
C)  deep space 
D)  tropical rainforests

Question 6

What percentage of marine fish species exist in coastal waters?

Accepted Answer

A)  20% 
B)  30% 
C)  40% 
D)  50% 
A)  20% 
B)  30% 
C)  40% 
D)  50%

Question 7

What was the cause of over half of North America's fish extinctions in coastal waters,wetlands and lakes?

Accepted Answer

A)  introduction of non-native species 
B)  excess agricultural runoff 
C)  overfishing 
D)  oil spills 
A)  introduction of non-native species 
B)  excess agricultural runoff 
C)  overfishing 
D)  oil spills

Question 8

What percentage of the world's original coastal wetlands has been lost to agriculture and development?

Accepted Answer

A)  about 25% 
B)  about 50% 
C)  about 66% 
D)  about 75% 
A)  about 25% 
B)  about 50% 
C)  about 66% 
D)  about 75%

Question 9

Wetlands in Canada are diminishing due to the expansion of agriculture and subdivisions.

Accepted Answer

A) True 
 B)False

Question 10

What situation is being faced by Canada's wetlands?

Accepted Answer

A)  Over 20% of the wetlands in southern Ontario have been converted to farms. 
B)  Less than 25% of the prairie pothole region is gone. 
C)  Wetlands are diminishing in Canada. 
D)  There are no staunch defenders of wetlands in Canada. 
A)  Over 20% of the wetlands in southern Ontario have been converted to farms. 
B)  Less than 25% of the prairie pothole region is gone. 
C)  Wetlands are diminishing in Canada. 
D)  There are no staunch defenders of wetlands in Canada.

Question 11

More than one-fourth of the world's coral reefs are severely damaged.

Accepted Answer

A) True 
 B)False

Question 12

Currently,no nations hunt whales.

Accepted Answer

A) True 
 B)False

Question 13

How can invasions by non-native species be stopped?

Accepted Answer

kill organisms in ship ballast

Question 14

Where is the Sackville Waterfowl Park located?

Accepted Answer

A)  in New Brunswick 
B)  in Nova Scotia 
C)  in Ontario 
D)  in Prince Edward Island 
A)  in New Brunswick 
B)  in Nova Scotia 
C)  in Ontario 
D)  in Prince Edward Island

Question 15

One way to help build Canada's salmon populations is to protect their ____________________ beds.

Accepted Answer

The answer of One way to help build Canada's salmon...

Question 16

What is caused by purple loosestrife?

Accepted Answer

A)  displacement of native vegetation 
B)  enhanced habitat for some wetland species 
C)  cross-pollination with native plants 
D)  increased wetland diversity 
A)  displacement of native vegetation 
B)  enhanced habitat for some wetland species 
C)  cross-pollination with native plants 
D)  increased wetland diversity

Question 17

The ________________________________________ approach takes into account interactions with other species and has some room for error.Many countries ignore this approach for short-term political and economic reasons.

Accepted Answer

optimum su

Question 18

What is the depletion of the world's marine fish stocks due to overfishing a classic example of?

Accepted Answer

A)  failure of fisheries management plans of individual countries 
B)  the tendencies of species to become extinct over time 
C)  the tragedy of the commons 
D)  failure to adapt new technologies to exploiting fish more efficiently 
A)  failure of fisheries management plans of individual countries 
B)  the tendencies of species to become extinct over time 
C)  the tragedy of the commons 
D)  failure to adapt new technologies to exploiting fish more efficiently

Question 19

Overfishing leads to commercial extinction.

Accepted Answer

A) True 
 B)False

Question 20

The Organization called Ducks Unlimited is a staunch defender of ____________________.

Accepted Answer

The answer of The Organization called Ducks Unlimited is a...

Exam 13: Sustaining Aquatic Biodiversity

What is considered the greatest threat to the Great Lakes?

Which approach to estimating marine fish populations is the most beneficial to fish populations?

Which device has saved many thousands of sea turtles from shrimp trawlers?

One of the reasons for the collapse of the cod fishery in eastern Canada was that the Canadian government ignored early warnings that stocks might be in jeopardy.

Which habitat do humans know little about?

What percentage of marine fish species exist in coastal waters?

What was the cause of over half of North America's fish extinctions in coastal waters,wetlands and lakes?

What percentage of the world's original coastal wetlands has been lost to agriculture and development?

Wetlands in Canada are diminishing due to the expansion of agriculture and subdivisions.

What situation is being faced by Canada's wetlands?

More than one-fourth of the world's coral reefs are severely damaged.

Currently,no nations hunt whales.

How can invasions by non-native species be stopped?

Where is the Sackville Waterfowl Park located?

One way to help build Canada's salmon populations is to protect their ____________________ beds.

What is caused by purple loosestrife?

The ________________________________________ approach takes into account interactions with other species and has some room for error.Many countries ignore this approach for short-term political and economic reasons.

What is the depletion of the world's marine fish stocks due to overfishing a classic example of?

Overfishing leads to commercial extinction.

The Organization called Ducks Unlimited is a staunch defender of ____________________.

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

Population Ecology

Applying Population Ecology: the Human Population

Sustaining Terrestrial Biodiversity: Managing and Protecting Ecosystems

Sustaining Biodiversity: the Species Approach

Food and Soil Resources

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy Resources

Energy Efficiency and Renewable Energy

Risk,toxicology,and Human Health

Air Pollution

Climate Change and Ozone Loss

Water Pollution

Pest Management

Solid and Hazardous Waste

Sustainable Cities

Economics, environment, and Sustainability

Politics, environment, and Sustainability

Environmental World-views, ethics, and Sustainability

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