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Environmental Changes — Test Answers

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Which statement accurately compares timber and sunlight?

A
Timber is a renewable resource, and sunlight is a nonrenewable resource.
B
Timber is a nonrenewable resource, and sunlight is a renewable resource.
C
Timber and sunlight are nonrenewable resources.
D
Timber and sunlight are renewable resources.
4

Which would be the most accurate title for this picture?

A
primary succession after a controlled fire
B
secondary succession after a volcanic eruption
C
secondary succession after a controlled fire
D
primary succession after a volcanic eruption
5

Which natural occurrence is shown?

A
flooding, short-term environmental change
B
tsunami, long-term environmental change
C
earthquake, long-term environmental change
D
drought, short-term environmental change
6

Which resource is a nonrenewable resource?

A
maple trees
B
precious metal
C
fresh water
D
solar energy
7

Which sustainable practice is paired correctly with its impact on the environment?

A
Practicing contour plowing results in a need for more land.
B
Using bamboo results in an increased use of forest trees.
C
Setting irrigation systems to run longer results in a reduction of water use.
D
Building more wind farms results in a reduction of fossil fuel use.
9

What effect would El Niño most likely have on organisms?

A
El Niño would cause continents to move to different parts of the planet.
B
El Niño would cause the extinction of an entire species.
C
El Niño would cause organisms to move in search of food and better conditions.
D
El Niño would cause changes in the genetic makeup of organisms.
12

How does La Niña affect the climate of the Pacific Ocean?

A
The cold water sinks deeper into the ocean.
B
The warm water moves toward the east.
C
The ocean becomes cooler.
D
The strength of the prevailing winds decreases.
14

Which environmental change is considered short term?

A
solar energy changes
B
ice age
C
forest fire
D
mountain building
17

Rainforests around the world are being cleared at an alarming rate to make room for new communities, agriculture, mining, and roads, and to provide lumber for construction and furniture. How might the destruction of rainforests affect the balance of gases in Earth's atmosphere?

A
by increasing carbon dioxide and increasing oxygen
B
by increasing carbon dioxide and decreasing oxygen
C
by decreasing carbon dioxide and increasing oxygen
D
by decreasing carbon dioxideand decreasing oxygen
19

A new highly nutritious crop is going to be planted in an area where it has never been planted before. Which is the most likely outcome of such an event?

A
positive as it changes local biodiversity
B
negative as it threatens local biodiversity
C
negative as it malnourishes the local population
D
positive as it malnourishes the local population
20

Which is a possible result of higher air temperatures caused by climate change?

A
decrease in strength of hurricanes
B
freezing of polar ice caps
C
increase in human population numbers
D
rapid evaporation of water in the soil
21

Which correctly lists three greenhouse gases?

A
helium, methane, oxygen
B
carbon dioxide, nitrous oxide, methane
C
methane, oxygen, carbon dioxide
D
oxygen, carbon dioxide, helium

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