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Ecology Final Exam 2 spring 05-11-09

True/False
Indicate whether the statement is true or false.
 

 1. 

biodiversity treaty ? an important result of the Earth Summit
 

 2. 

gene ? a piece of DNA that codes a specific trait
 

 3. 

endangered species ? species that are native to and found only within a limited area
 

 4. 

poaching ? a piece of DNA that codes a specific trait
 

 5. 

ecotourism ? a form of tourist that supports the conservation and sustainable development of ecologically unique area
 

 6. 

germ plasm ? any form of genetic material
 

 7. 

exotice species ? a species that is not native to a particular region
 

 8. 

threatened species ? a species that has a declining population and that is likely to becomed endangered if it is not protected
 

 9. 

biodiversity ? the nimber and variety of different species in a given area
 

 10. 

habitat conservation plan ? an important result of the Earth Summit
 

 11. 

endemic species ? a species that is not native to a particular region
 

 12. 

endemic species ? a species that is not native to a particular region
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 13. 

During the _____ period(s), humans altered their habitats.
a.
hunter-gatherer
c.
Industrial Revolution
b.
agricultural revolution
d.
All of the above
 

 14. 

The fact that useful man-made substances can cause unforeseen damage is illustrated by
a.
the detection of Oscillatoria rubescens in Lake Washington.
b.
the condition of the atmosphere’s protective ozone layer.
c.
the pollution of the Gulf of Mexico from farm chemicals.
d.
All of the above
 

 15. 

Before you can make a decision using a decision-making model, what step must you take?
a.
Explore the consequences of each option.
b.
Consider which values apply to the issue.
c.
Gather information.
d.
All of the above
 

 16. 

When making a decision about whether or not to build a dam, you are considering an economic value when you ask which of the following questions?
a.
Will the dam provide new leisure activities?
b.
How many jobs will building the dam generate?
c.
Will building the dam destroy natural resources?
d.
Is it right to build a dam here?
 

 17. 

Which of the following models would you use to represent the shape of Earth’s surface beneath the oceans?
a.
graphical
c.
conceptual
b.
mathematical
d.
physical
 

 18. 

The community of a pond is made up of all the
a.
abiotic factors in the water.
b.
resources organisms need.
c.
habitats in and around the water.
d.
populations of fish, insects, and other living organisms.
 

 19. 

Most land animals depend on angiosperms for
a.
reproduction.
c.
food.
b.
water.
d.
All of the above
 

 20. 

Succession is possible because
a.
climates change over time.
b.
it is a rapid and chaotic process that is very difficult to control.
c.
existing plants reproduce quickly.
d.
new species make the environment less suitable for previous ones.
 

 21. 

What type of vegetation would you expect to find on an abandoned farm that has remained undisturbed for 150 years?
a.
short grasses
c.
young pine trees
b.
shrubs
d.
tall, mature oak trees
 

 22. 

The majority of marine organisms are found in
a.
deep ocean waters.
c.
fisheries.
b.
shallow, coastal waters.
d.
None of the above
 

 23. 

A species of plant has exponential growth after it is introduced into an area where it has never lived. Which statement best describes exponential growth?
a.
Each individual plant grows much larger than usual.
b.
The population immediately decreases.
c.
Within a few years the population increases dramatically.
d.
The species’ reproductive potential declines.
 

 24. 

Which of the following has the greatest effect on reproductive potential?
a.
producing more offspring at a time
c.
having a longer life span
b.
reproducing more often
d.
reproducing earlier in life
 

 25. 

During Stage 2 of a population’s demographic transition, the death rate
a.
increases.
c.
remains the same.
b.
decreases.
d.
is zero.
 

 26. 

Which of the following is not described by the model of demographic transition?
a.
life expectancy
c.
immigration
b.
education of women
d.
industrialization
 

 27. 

The United States laws that protect endangered species
a.
are considered to be the strongest in the world.
b.
are much weaker than the legal protections in most other countries.
c.
are rarely enforced.
d.
apply to only 10 species of animals and about 20 species of plants.
 

 28. 

The major human causes of extinction today are
a.
hunting and destroying habitats.
b.
polluting and introducing non-native species.
c.
Both (a) and (b)
d.
Neither (a) nor (b)
 

 29. 

What is the purpose of adding chlorine to water during the water treatment process?
a.
to filter and remove large debris
b.
to form flocs that bacteria and other impurities will cling to
c.
to kill bacteria that have accumulated, as well as prevent future bacterial growth
d.
to remove unwanted gases
 

 30. 

Most large cities get water for households and industries from
a.
deep wells.
c.
pumps connected to springs.
b.
rivers and lakes.
d.
removing salt from sea water.
 

 31. 

All of the following are primary air pollutants except
a.
carbon monoxide.
c.
sulfur oxides.
b.
nitric acid.
d.
VOCs.
 

 32. 

A true statement about sulfur dioxides is that they are
a.
primarily a byproduct of fuel burning in automobiles.
b.
involved in the formation of acid precipitation.
c.
released when solvents are used in manufacturing.
d.
participants in the chemical reactions that produce ozone.
 

 33. 

Which of the following is a secondary pollutant?
a.
hydrocarbon emissions in car exhaust
b.
sulfur dioxide created when electrical power is generated
c.
VOCs released by a dry cleaner
d.
smog formed in the presence of sunlight
 

 34. 

A true statement concerning the physical properties of air is that
a.
warm air sinks toward Earth’s surface.
b.
warm air can hold more water vapor than an equal amount of cold air.
c.
as air warms, the water vapor it holds condenses.
d.
cold air rises in the atmosphere.
 

 35. 

Traffic jams, substandard housing, and polluted air and water can be caused by rapid growth in cities, a phenomenon known as
a.
urbanization.
c.
urban crisis.
b.
urban sprawl.
d.
infrastructure.
 

 36. 

Deforestation is an especially serious problem in tropical rain forests because
a.
farmers must repeatedly clear additional forest area to obtain land that can support crops.
b.
it takes so long for the replacement seedlings to reach maturity due to the hot climate.
c.
they are located in developed nations with high per person resource consumption.
d.
the downed trees are left to rot, damaging the soil.
 

 37. 

Soil formation
a.
is an inorganic process.
b.
occurs more quickly in arid regions.
c.
is hindered by frequent temperature changes.
d.
usually involves the decomposition of bedrock.
 

 38. 

Gangue minerals
a.
are valued for their rarity and durability.
b.
have no commercial value.
c.
are the most difficult to mine.
d.
are native elements.
 

 39. 

The layer of impurities on top of molten metal that forms during smelting is called
a.
smelt.
c.
slag.
b.
dredge.
d.
flux.
 

 40. 

Which of the following accurately describes the use of fossil fuels for energy?
a.
At the present rate, we will run out of fossil fuels in about 250 years.
b.
Burning fossil fuels releases large amounts of carbon dioxide into the atmosphere.
c.
Fossil fuels account for 69 percent of the electricity generated in the United States.
d.
All of the above
 

 41. 

Which of the following is an advantage of nuclear energy?
a.
It does not produce solid waste.
c.
It poses no safety risks.
b.
It is cost-efficient.
d.
It does not produce air pollution.
 

 42. 

Oil production is still increasing, but it
a.
will start decreasing in the next year.
b.
is increasing much more dramatically than it did in the past.
c.
will start decreasing in the next five years.
d.
is increasing much more slowly than it did in the 1960s.
 

 43. 

Which of the following statements about hydrogen as a fuel source is correct?
a.
Hydrogen can be burned as a fuel or used to produce electricity chemically.
b.
Hydrogen is not abundant enough on Earth.
c.
When hydrogen is burned, it releases pollutants.
d.
Generating hydrogen by burning fossil fuels is inexpensive.
 

 44. 

A heat exchanger is used in
a.
geothermal power plants.
c.
wind turbines.
b.
passive solar heating.
d.
active solar heating.
 

 45. 

What percentage of the energy needed to make aluminum cans from ore is needed to make recycled aluminum cans from used aluminum cans?
a.
95 percent
c.
5 percent
b.
60 percent
d.
None of the above
 

 46. 

An example of something that is biodegradable is
a.
a leaf in a compost pile.
b.
a plastic milk jug in a landfill.
c.
a polystyrene burger container in a trash can.
d.
All of the above
 

 47. 

Which of the following pathogens have made a cross-species transfer to humans?
a.
influenza virus
c.
West Nile virus
b.
hantavirus
d.
All of the above
 

 48. 

Two diseases that can be caused directly by pollution are
a.
measles and tuberculosis.
c.
cholera and river blindness.
b.
lead poisoning and lung cancer.
d.
colds and flu.
 

 49. 

Why didn’t the United States sign the Kyoto Protocol?
a.
The United States was not part of treaty negotiations.
b.
The terms of the treaty were considered too weak.
c.
It was considered costly and contained inconsistent requirements for different nations.
d.
The United States does not contribute to global warming.
 

 50. 

Which level of government is the primary target of lobbyists?
a.
city
c.
state
b.
county
d.
federal
 



 
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