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Multiple Choice Quiz
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1

What does a graph of human population growth show?
A)increase in the number of people per unit of time
B)number of people being born minus the number of people dying
C)number of children living per each two adults
D)number of people times the number of children each one has per year
2

Growth rate of a population is determined by:
A)the increase in the number of people per unit of time.
B)The number of people being born minus the number of people dying.
C)the number of children living per each two adults.
D)the number of people times the number of children each one has per year.
3

Which of the following factors cause a decrease in population growth?
A)biotic potential
B)birthrate
C)carrying capacity
D)environmental resistance
4

More-developed countries such as the United States, Canada and Europe are characterized by:
A)high population growth rate and poor standard of living.
B)modest population growth rate and good standard of living.
C)high population growth rate and good standard of living.
D)very low population growth rate and poor standard of living.
5

The rapid increase in the human population between 1850 and 1950 was due to which of the following factors?
A)decreased death rate
B)increased birthrate
C)increased biotic potential
D)newly conquered territories
6

Why are many populations in less-developed countries continuing to experience high growth rates?
A)better economic conditions
B)high birthrates
C)improved housing
D)world aid in the form of food
7

Which of the following is NOT a population age group?
A)dependent
B)old age
C)reproductive
D)post-reproductive
8

Age-structure diagrams
A)can be used to predict future population growth.
B)show the distribution of people who are dependent, reproductive, and postreproductive.
C)show the relative number of young women compared to older women.
D)All of the above are correct.
9

Which of the following are renewable resources?
A)diamonds and gold
B)oil and natural gas
C)solar energy
D)the amount of land
10

Beaches are attractive places to live; however, bringing the population close to the water's edge poses several problems. Which of the following are caused by people living near the coastline?
A)beach erosion
B)loss of coastal wetlands and salt water marshes
C)loss of habitat for marine organisms
D)All of the above are problems caused by people living near the coastline.
11

Which of the following processes lead to desertification of land in semi-arid areas?
A)excessive irrigation
B)intense fertilization
C)overgrazing
D)property development
12

People have begun to settle in the rain forests. In what way has this been beneficial?
A)lands have been cleared for logging and farming
B)loss of biodiversity
C)loss of soil fertility
D)There have been no benefits to settling in the rain forests.
13

90% of the freshwater worldwide is used for:
A)drinking water
B)industry
C)irrigating crops
D)bathing
14

Most of the Earth's water is found in
A)groundwater.
B)ice caps, ice sheets, and glaciers.
C)lakes and rivers.
D)oceans.
15

Saltwater intrusion is the
A)mixing of saltwater and freshwater in aquifers.
B)mixing of surface saltwater and freshwater in rivers joining the oceans.
C)process of purifying saltwater for drinking and agriculture.
D)runoff of saltwater from irrigation systems.
16

Which of the following methods are effective for conserving water?
A)development of drought resistant plants
B)instillation of drip irrigation systems
C)treatment and use of waste water for irrigation
D)All of these methods would be effective in conserving water.
17

Which of the following is the best solution to the shortage of water facing much of the world?
A)building dams
B)reusing and conserving water
C)pumping of deep aquifers
D)purifying salt water
18

Food comes from what activities:
A)raising animals
B)growing crops
C)fishing the seas
D)All of the above
19

Which of the following methods have allowed us to meet the increasing demand for food?
A)development of food substitutes
B)increased fishing of the seas
C)improved trapping and hunting
D)modernization of farming
20

Which of the following would be a positive choice farmers could make with regard to their impact on the environment?
A)apply pesticides to reduce crop damage
B)increase irrigation to increase productivity
C)plant one or two genetic varieties of each crop
D)use biological pest control
21

The world hunger situation could best be addressed by
A)eating lower on the food chain.
B)facilitate fishing in less developed countries.
C)increasing funding for corn production as cattle feed.
D)producing more animal protein.
22

Most of the world's energy comes from which of the following sources?
A)hydroelectric power
B)nuclear power
C)oil, natural gas and coal
D)solar radiation
23

Greenhouse gases get their name because they
A)are produced by plants.
B)are above the average atmospheric temperature.
C)hinder infrared heat from escaping.
D)produce solar radiation.
24

Renewable energy sources include all of the following except:
A)235 uranium.
B)geothermal energy.
C)hydropower.
D)wind power.
25

Worldwide hydropower generates approximately _____ of all electricity.
A)less than 10%
B)19%
C)75%
D)98%
26

Which of the following are potential benefits to using hydrogen as a source of fuel?
A)clean burning
B)lessen dependence on fossil fuels
C)serves as power for vehicles
D)All of the above are potential benefits.
27

Heavy metals are dangerous to humans because they
A)are found in large quantities in the oceans.
B)discolor teeth and weaken bones.
C)enter waste water through urine.
D)inhibit enzyme activity.
28

Biological magnification of industrial wastes occurs when
A)fish and other aquatic organisms feed directly on the waste of other animals.
B)industrial wastes are concentrated as they move up the food chain.
C)they are decomposed by both bacteria and algae.
D)vegetation surrounding rivers and lakes prevents the wastes from entering the water.
29

CFC's became important in:
A)biological magnification
B)sewage treatment
C)the reduction of the ozone layer
D)none of the above
30

What percentage of coral reefs have already been destroyed?
A)10%
B)25%
C)60%
D)100%
31

Humans have introduced alien species into the environment in all these ways except _________.
A)genetic engineering
B)human colonization of new areas
C)horticulture and agriculture
D)accidental transport
32

What statement is true about pollution?
A)pollution is any environmental change that adversely affects living things
B)pollution is the third main cause of extinction
C)pollution can lead to disease
D)All of these are true about pollution.
33

Which of the following is NOT a source of environmental pollution that threatens biodiversity?
A)synthetic organic chemicals
B)overexploitation
C)acid rain and ozone depletion
D)global warming
34

What organism is near extinction due to overexploitation?
A)exotic pets
B)rare cacti
C)Siberian tiger
D)All of these are correct.
35

Which of these is not an indirect value of biodiversity?
A)derivation of medicines
B)regulation of the climate
C)prevention of soil erosion
D)participation in biogeochemical cycles
36

Why is biodiversity valuable and desirable to humans?
A)for medicinal purposes
B)for agricultural diversity
C)for consumptive use
D)All of these are correct.
37

Today's society is unsustainable due to:
A)a large amount of natural ecosystems are being used by humans.
B)increased pollution from agriculture and animal waste
C)decrease in the amount of freshwater and nonrenewable resources
D)All of the above
38

A sustainable society will:
A)use renewable energy resources
B)recycle materials
C)reduce consumption
D)All of the above
39

Which of the following would be a logical step toward becoming a sustainable society?
A)focus more research on developing cleaner uses of fossil fuels
B)increase mining of metals as potential sources of fuel
C)maximize the use of renewable energy sources
D)utilize natural ecosystems for single family homes
40

The Gross National Product is an indicator of economic well-being. A similar ecological indicator would include which of the following factors?
A)aesthetic value
B)cultural value
C)value to LCDs
D)only a and b





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