Multiple Choice
Identify the letter of the choice that
best completes the statement or answers the question.
A
B
C
D
1.
In the
very distant past, most people
a.
lived in small groups.
b.
lived in permanent settlements.
c.
did not gather plants.
d.
did not hunt animals.
A
B
C
D
2.
Imported plants in Hawaii have
a.
crowded out many native species.
b.
reduced the native bird species.
c.
introduced diseases.
d.
depleted natural resources.
A
B
C
D
3.
Early
hunters and gatherers in North America are responsible for
a.
natural plant and animal
populations.
b.
a major
extinction event of large animals.
c.
producing new varieties of
crops.
d.
inventing
technology such as manufactured tools.
A
B
C
D
4.
Which
has become the most important source for environmental change on Earth?
a.
climate
b.
energy
c.
human activity
d.
conservation biology
A
B
C
D
5.
An
old-growth forest is
a.
a renewable resource.
b.
a nonrenewable resource.
c.
a microclimate.
d.
poor in biodiversity.
A
B
C
D
6.
Why
are fossil fuels nonrenewable?
a.
They require hundreds of millions of years to
form.
b.
Their ecosystems
change forever when they are burned.
c.
They are converted to carbon dioxide when they are
burned.
d.
They exist in a
very small supply.
A
B
C
D
7.
The
wearing away of surface soil by water and wind is known as
a.
deforestation.
b.
desertification.
c.
overgrazing.
d.
soil erosion.
A
B
C
D
8.
The
sulfur and nitrogen compounds in smog combine with water to form
a.
ozone.
b.
ammonia.
c.
acid rain.
d.
chlorofluorocarbons.
A
B
C
D
9.
Of the
following items, the last to occur when toxic chemicals are discarded into a stream is that the
chemicals
a.
pose a threat to
human health.
b.
enter the food
chain.
c.
are carried into
a lake.
d.
harm aquatic
plants and animals.
A
B
C
D
10.
Using
renewable resources while ensuring that they are not depleted is a practice called
a.
sustainable use.
b.
monoculture.
c.
biological magnification.
d.
renewable resource.
A
B
C
D
11.
The
number of different species in the biosphere is called
a.
biodiversity.
b.
ecosystem diversity.
c.
genetic diversity.
d.
species diversity.
A
B
C
D
12.
Biodiversity is important to human society because it
a.
is a natural resource.
b.
provides food and goods.
c.
provides medicines.
d.
all of the above
A
B
C
D
13.
The
sum total of the genetically-based variety of living organisms in the biosphere is
called
a.
species
diversity.
b.
sustainable
use.
c.
biodiversity.
d.
conservation biology.
A
B
C
D
14.
An
endangered species is
a.
a diseased animal.
b.
a dangerous predator.
c.
a group of organisms near
extinction.
d.
all organisms at
the top of a food chain.
A
B
C
D
15.
DDT
was used to
a.
fertilize
soil.
b.
kill
insects.
c.
form
ozone.
d.
feed
animals.
A
B
C
D
16.
One of
the greatest threats today to biological diversity is
a.
old-growth forests.
b.
ozone depletion.
c.
habitat destruction.
d.
monoculture.
A
B
C
D
17.
As DDT
moves up the trophic levels in food chains, or food webs, its concentration
a.
stays the same.
b.
increases.
c.
decreases.
d.
is eliminated.
A
B
C
D
18.
An
increase in Earth’s average temperature from the buildup of carbon dioxide and other gases in
the atmosphere is called
a.
the greenhouse effect.
b.
ozone depletion.
c.
global warming.
d.
particulate dispersal.
A
B
C
D
19.
Some
scientists think that global warming is
a.
a natural variation in climate.
b.
difficult to predict.
c.
melting the polar ice caps.
d.
all of the above
A
B
C
D
20.
The
major cause of ozone depletion is
a.
nitric acid.
b.
sulfuric acid.
c.
chlorofluorocarbons.
d.
ultraviolet light.
