Question 1

Surface and aquifer freshwater sources hold what percent of the Earth's total water?

Accepted Answer

A)   2%
B)   more than 97%
C)   10-12%
D)   less than 1%
E)   20%

Question 2

Eutrophication of a lake most likely is the result of

Accepted Answer

A)   an increase in oxygen content of the water.
B)   elevated nitrogen and oxygen gas levels in the water.
C)   an increase in atmospheric pressure associated with surface waters.
D)   competitive exclusion.
E)   excessive concentrations of organic and inorganic nutrients.

Question 3

Humans have become so dependent on fossil fuels that despite an increasing body of evidence that indicates burning these fuels is destroying aspects of the environment, little change in the sources of fuels has occurred. What types of alternative fuels can be used to reduce negative impacts on the environment?

Accepted Answer

There are many alternative fuel sources ...

Question 4

Most of the energy used by humans comes from which one of the following sources?

Accepted Answer

A)   solar energy
B)   nuclear energy
C)   fossil fuels
D)   hydroelectric power
E)   geothermal power

Question 5

Heat is considered a type of water pollution because it increases the amount of oxygen in the water, which leads to the death of plants and the overpopulation of animals.

Accepted Answer

A) True 
 B)False

Question 6

Prolific growth of algae as a result of pollutants in a lake is an example of ________.

Accepted Answer

The answer of Prolific growth of algae as a result...

Question 7

Scientists have identified approximately ________ million species of organisms, but millions more are thought to exist.

Accepted Answer

The answer of Scientists have identified approximately ________ million species...

Question 8

More than half the world's human population lives in rural poverty. Which of the following environmental issues is most likely to be associated with these populations?

Accepted Answer

A)   desertification
B)   acid rain
C)   oil pollution
D)   smog
E)   ozone depletion

Question 9

Biodiversity refers to the variety of richness of species on Earth.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following pollutants is generally stored in dry locations because they remain a potential problem for thousands of years?

Accepted Answer

A)   radioactive waste
B)   PANs (peroxyacyl nitrates) 
C)   CFCs
D)   heavy metals
E)   gasoline and oil

Question 11

The largest hole in the ozone layer occurs in the stratospheric layer over

Accepted Answer

A)   the Amazon rainforests.
B)   the eastern coast of the United States.
C)   the western coast of the United States.
D)   Africa and South America.
E)   Antarctica.

Question 12

The greenhouse effect is a natural and important phenomenon because it

Accepted Answer

A)   removes smog from affected areas.
B)   maintains the surface temperature on Earth.
C)   reverses the effect that CFCs have on the ozone layer.
D)   decreases the amount of carbon dioxide in the stratosphere.
E)   reverses the effects of deforestation.

Question 13

Pollution of groundwater is generally a more serious concern, in part because groundwater is a slowly exchanging pool.

Accepted Answer

A) True 
 B)False

Question 14

Freshwater is most likely to be polluted

Accepted Answer

A)   by oil spills in ocean water moving inland.
B)   as a result of eutrophication.
C)   by contaminants from aquifers moving to surface waters.
D)   from organic solvents and farming chemicals in surface water runoff.
E)   by radioactive waste seeping from nuclear reactors.

Question 15

The major concerns regarding the effects of air pollution fall into the areas of smog, acid rain, destruction of the ozone layer, and

Accepted Answer

A)   pesticides.
B)   sustainable development.
C)   global warming.
D)   chlorofluorocarbons.
E)   denitrification.

Question 16

Commercial logging by European countries in the Ivory Coast has reduced the pristine 70 million acres of forests that once existed to about

Accepted Answer

A)   fewer than 1 million acres.
B)   5-7 million acres.
C)   15-20 million acres.
D)   30 million acres.
E)   50 million acres.

Question 17

Which one of the following statements is TRUE regarding rural poverty?

Accepted Answer

A)   Less than 25% of the world's population lives in rural poverty.
B)   The problems of land use in rural areas are similar to those in cities.
C)   Those in impoverished rural communities will often cut down all trees for fuel and shelter.
D)   The use of communal lands in impoverished rural areas is carefully monitored.
E)   Few individuals living in rural areas depend on the local environment for sustenance.

Question 18

According to public health officials, all of the following may be caused by water pollutants EXCEPT which one?

Accepted Answer

A)   birth defects
B)   nervous disorders
C)   miscarriages
D)   skin rashes
E)   autoimmune disorders

Question 19

________ provide valuable flood control because they can hold large volumes of water.

Accepted Answer

Wetlands or Marshes ...

Question 20

The main human activities that have raised atmospheric CO2 levels are

Accepted Answer

A)   succession and adaptive radiation.
B)   home development on grasslands and wetlands.
C)   drainage of wetlands along rivers and oceans.
D)   deforestation and burning fossil fuels.
E)   negligible because CO2 levels have risen and fallen naturally regardless of human activity.

Exam 24: Human Impacts, Biodiversity, and Environmental Issues

Biodiversity refers to the variety of richness of species on Earth.

Correct Answer
verified

Pollution of groundwater is generally a more serious concern, in part because groundwater is a slowly exchanging pool.

Correct Answer
verified

Which one of the following statements is TRUE regarding rural poverty?

Correct Answer
verified

The largest hole in the ozone layer occurs in the stratospheric layer over

Correct Answer
verified

Commercial logging by European countries in the Ivory Coast has reduced the pristine 70 million acres of forests that once existed to about

Correct Answer
verified

According to public health officials, all of the following may be caused by water pollutants EXCEPT which one?

Correct Answer
verified

________ provide valuable flood control because they can hold large volumes of water.

Correct Answer
verified
Wetlands or Marshes ...
View Answer

Most of the energy used by humans comes from which one of the following sources?

Correct Answer
verified

Which of the following pollutants is generally stored in dry locations because they remain a potential problem for thousands of years?

Correct Answer
verified

Eutrophication of a lake most likely is the result of

Correct Answer
verified

Freshwater is most likely to be polluted

Correct Answer
verified

Heat is considered a type of water pollution because it increases the amount of oxygen in the water, which leads to the death of plants and the overpopulation of animals.

Correct Answer
verified

Prolific growth of algae as a result of pollutants in a lake is an example of ________.

Correct Answer
verified

The main human activities that have raised atmospheric CO₂ levels are

Correct Answer
verified

Surface and aquifer freshwater sources hold what percent of the Earth's total water?

Correct Answer
verified

Correct Answer
verified
There are many alternative fuel sources ...
View Answer

The greenhouse effect is a natural and important phenomenon because it

Correct Answer
verified

The major concerns regarding the effects of air pollution fall into the areas of smog, acid rain, destruction of the ozone layer, and

Correct Answer
verified

Scientists have identified approximately ________ million species of organisms, but millions more are thought to exist.

Correct Answer
verified

More than half the world's human population lives in rural poverty. Which of the following environmental issues is most likely to be associated with these populations?

Correct Answer
verified

Exam 24: Human Impacts, Biodiversity, and Environmental Issues

Biodiversity refers to the variety of richness of species on Earth.

Correct AnswerverifiedShow Answer

Pollution of groundwater is generally a more serious concern, in part because groundwater is a slowly exchanging pool.

Correct AnswerverifiedShow Answer

Which one of the following statements is TRUE regarding rural poverty?

Correct AnswerverifiedShow Answer

The largest hole in the ozone layer occurs in the stratospheric layer over

Correct AnswerverifiedShow Answer

Commercial logging by European countries in the Ivory Coast has reduced the pristine 70 million acres of forests that once existed to about

Correct AnswerverifiedShow Answer

According to public health officials, all of the following may be caused by water pollutants EXCEPT which one?

Correct AnswerverifiedShow Answer

________ provide valuable flood control because they can hold large volumes of water.

Correct AnswerverifiedWetlands or Marshes ...View AnswerShow Answer

Most of the energy used by humans comes from which one of the following sources?

Correct AnswerverifiedShow Answer

Which of the following pollutants is generally stored in dry locations because they remain a potential problem for thousands of years?

Correct AnswerverifiedShow Answer

Eutrophication of a lake most likely is the result of

Correct AnswerverifiedShow Answer

Freshwater is most likely to be polluted

Correct AnswerverifiedShow Answer

Heat is considered a type of water pollution because it increases the amount of oxygen in the water, which leads to the death of plants and the overpopulation of animals.

Correct AnswerverifiedShow Answer

Prolific growth of algae as a result of pollutants in a lake is an example of ________.

Correct AnswerverifiedShow Answer

The main human activities that have raised atmospheric CO2 levels are

Correct AnswerverifiedShow Answer

Surface and aquifer freshwater sources hold what percent of the Earth's total water?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedThere are many alternative fuel sources ...View AnswerShow Answer

The greenhouse effect is a natural and important phenomenon because it

Correct AnswerverifiedShow Answer

The major concerns regarding the effects of air pollution fall into the areas of smog, acid rain, destruction of the ozone layer, and

Correct AnswerverifiedShow Answer

Scientists have identified approximately ________ million species of organisms, but millions more are thought to exist.

Correct AnswerverifiedShow Answer

More than half the world's human population lives in rural poverty. Which of the following environmental issues is most likely to be associated with these populations?

Correct AnswerverifiedShow Answer

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
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Wetlands or Marshes ...
View Answer

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The main human activities that have raised atmospheric CO₂ levels are

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
There are many alternative fuel sources ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified