Question 1

Oxygen sag curves occur when

Accepted Answer

A) water levels are high 
B) bacteria break down biodegradable wastes 
C) when water flows quickly 
D) when water is cool or cold 
E) salt and fresh water mix 
A) water levels are high 
B) bacteria break down biodegradable wastes 
C) when water flows quickly 
D) when water is cool or cold 
E) salt and fresh water mix

Question 2

One of the primary lessons that can be learned from the Core Case Study about Lake Washington is that citizen pressure on elected officials works.

Accepted Answer

A) True 
 B)False

Question 3

Over the 21ˢᵗ century, scientists expect to find many millions of ____ to become a major global health problem.

Accepted Answer

A) people 
B) carcinogens 
C) solar panels 
D) leaking underground storage tanks 
E) leaking solid waste landfills 
A) people 
B) carcinogens 
C) solar panels 
D) leaking underground storage tanks 
E) leaking solid waste landfills

Question 4

In less-developed countries cities discharge_______________ of their untreated sewage directly into rivers, streams and lakes whose waters are used for drinking, bathing, and washing clothes.

Accepted Answer

The answer of In less-developed countries cities discharge_______________ of their...

Question 5

The invasion by zebra mussels into The Great Lakes is an example of pollution.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following types of sewage treatment are properly matched?

Accepted Answer

A) primary─biological process 
B) secondary─mechanical process 
C) advanced─physical and chemical processes 
D) secondary─chemical process 
E) primary─chemical process 
A) primary─biological process 
B) secondary─mechanical process 
C) advanced─physical and chemical processes 
D) secondary─chemical process 
E) primary─chemical process

Question 7

The World Health Organization (WHO) estimates how many people on earth do not have access to clean drinking water?

Accepted Answer

A) 1 out of 100 
B) 1 out of 50 
C) 1 out of 20 
D) 1 out of 10 
E) 1 out of 7 
A) 1 out of 100 
B) 1 out of 50 
C) 1 out of 20 
D) 1 out of 10 
E) 1 out of 7

Question 8

Which of the following statements about lakes is true?

Accepted Answer

A) Stratified layers of lakes are characterized by vertical mixing. 
B) Stratification increases levels of dissolved oxygen, especially in the bottom layer. 
C) Lakes are more vulnerable than streams to contamination by plant nutrients, and toxic substances 
D) Lakes have more flushing than streams. 
E) Changing of water in lakes takes days to weeks. 
A) Stratified layers of lakes are characterized by vertical mixing. 
B) Stratification increases levels of dissolved oxygen, especially in the bottom layer. 
C) Lakes are more vulnerable than streams to contamination by plant nutrients, and toxic substances 
D) Lakes have more flushing than streams. 
E) Changing of water in lakes takes days to weeks.

Question 9

The individual matters in terms of what can be done to help reduce water pollution.All of the following are things we can do, except

Accepted Answer

A) Fertilize gardens and lawns with manure or compost instead of fertilizers. 
B) Minimize use of pesticides. 
C) Prevent yard wastes from entering storm drains 
D) Do not flush unwanted medicines down the toilet. 
E) Buy commercially produced foods. 
A) Fertilize gardens and lawns with manure or compost instead of fertilizers. 
B) Minimize use of pesticides. 
C) Prevent yard wastes from entering storm drains 
D) Do not flush unwanted medicines down the toilet. 
E) Buy commercially produced foods.

Question 10

Water is being bottled and shipped to the U.S.and Europe from the Pacific island of Fiji, yet _____ of the people of Fiji do not have access to safe drinking water.

Accepted Answer

The answer of Water is being bottled and shipped to...

Question 11

Scientists fear the dead zone in the Gulf of Mexico could reach a tipping point beyond which the ecosystem could collapse.

Accepted Answer

A) True 
 B)False

Question 12

The natural nutrient enrichment of a shallow lake, estuary, or slow moving stream is called

Accepted Answer

A) oligotrophy 
B) spring/fall overturn 
C) upwellings 
D) red tides 
E) eutrophication 
A) oligotrophy 
B) spring/fall overturn 
C) upwellings 
D) red tides 
E) eutrophication

Question 13

Use the Figure above to answer the following question(s).
-In which zone has the stream recovered, with a return of clean water organisms?

Accepted Answer

The answer of   
 
Use the Figure above...

Question 14

Developing countries dump the majority of their untreated sewage directly into freshwater ecosystems.

Accepted Answer

A) True 
 B)False

Question 15

Human activities can greatly accelerate ____________________ by increasing the rate at which nutrients and organic substances enter aquatic ecosystems from surrounding land.

Accepted Answer

The answer of Human activities can greatly accelerate ____________________ by...

Question 16

As a result of efforts of researchers and the public, the waste water formerly released into Lake Washington was diverted into nearby rivers.

Accepted Answer

A) True 
 B)False

Question 17

An important indicator of water quality is the level of ____________________, which changes due to the oxygen demand of breaking down biodegradable wastes.

Accepted Answer

The answer of An important indicator of water quality is...

Question 18

Groundwater dispersing a pollutant creates a(n) ____________________, which, if it reaches a well, can get into drinking water.

Accepted Answer

The answer of Groundwater dispersing a pollutant creates a(n) ____________________,...

Question 19

At least __________ % of the oil reaching the oceans is spilled, leaked, or dumped onto land on into sewers.

Accepted Answer

The answer of At least __________ % of the oil...

Question 20

One-fifth of all the freshwater in the world is contained in the ____________________ of the United States.

Accepted Answer

The answer of One-fifth of all the freshwater in the...

Exam 20: Water Pollution

Oxygen sag curves occur when

One of the primary lessons that can be learned from the Core Case Study about Lake Washington is that citizen pressure on elected officials works.

Over the 21ˢᵗ century, scientists expect to find many millions of ____ to become a major global health problem.

In less-developed countries cities discharge_______________ of their untreated sewage directly into rivers, streams and lakes whose waters are used for drinking, bathing, and washing clothes.

The invasion by zebra mussels into The Great Lakes is an example of pollution.

Which of the following types of sewage treatment are properly matched?

The World Health Organization (WHO) estimates how many people on earth do not have access to clean drinking water?

Which of the following statements about lakes is true?

The individual matters in terms of what can be done to help reduce water pollution.All of the following are things we can do, except

Water is being bottled and shipped to the U.S.and Europe from the Pacific island of Fiji, yet _____ of the people of Fiji do not have access to safe drinking water.

Scientists fear the dead zone in the Gulf of Mexico could reach a tipping point beyond which the ecosystem could collapse.

The natural nutrient enrichment of a shallow lake, estuary, or slow moving stream is called

Use the Figure above to answer the following question(s). -In which zone has the stream recovered, with a return of clean water organisms?

Developing countries dump the majority of their untreated sewage directly into freshwater ecosystems.

Human activities can greatly accelerate ____________________ by increasing the rate at which nutrients and organic substances enter aquatic ecosystems from surrounding land.

As a result of efforts of researchers and the public, the waste water formerly released into Lake Washington was diverted into nearby rivers.

An important indicator of water quality is the level of ____________________, which changes due to the oxygen demand of breaking down biodegradable wastes.

Groundwater dispersing a pollutant creates a(n) ____________________, which, if it reaches a well, can get into drinking water.

At least __________ % of the oil reaching the oceans is spilled, leaked, or dumped onto land on into sewers.

One-fifth of all the freshwater in the world is contained in the ____________________ of the United States.

Environmental Problems, Their Causes, and Sustainability

Science, Matter, Energy, and Systems

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Biodiversity, Species Interactions, and Population Control

The Human Population and Its Impact

Climate and Biodiversity

Aquatic Biodiversity

Sustaining Biodiversity: the Species Approach

Sustaining Terrestrial Biodiversity: the Ecosystem Approach

Sustaining Aquatic Biodiversity

Food, Soil, and Pest Management

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy

Energy Efficiency and Renewable Energy

Environmental Hazards and Human Health

Air Pollution

Climate Disruption and Ozone Depletion

Solid and Hazardous Waste

Cities and Sustainability

Economics, Environment, and Sustainability

Politics, Environment, and Sustainability

Environmental Worldviews, Ethics, and Sustainability

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