AnswersTPS EdX BiologyEnvironmental Changes

Practice Test Answers

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1
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Which example is a long-term environmental change?

A
La Niña
B
climate change
C
El Niño
D
small asteroid impact
2
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Which of these could result in secondary succession?

A
an introduced species that destroys all the native plants in an area
B
a volcanic eruption that covers most of what used to be a forest
C
the formation of a tall sand dune on a previously grassy beach
D
a vast glacier in motion forming a U-shaped valley in its wake
3

Which describes one characteristic of both El Niño and La Niña?

A
Both are causes of hurricane activity.
B
Both occur in the Pacific Ocean.
C
Both create warmer water.
D
Both are causes of long-term climate change.
4

How does mining impact the environment?

A
It has a negative impact on the environment by allowing toxic chemicals to harm wildlife.
B
It has a positive impact on the environment by releasing chemicals into the environment.
C
It has a negative impact on the environment by providing new niches for wildlife to inhabit.
D
It has a positive impact on the environment by permanently altering the ecosystem.
5

Which example is a short-term environmental change?

A
tsunami
B
large asteroid impact
C
global warming
D
ice age
6

Which statement describes one way that wind energy is different from energy from fossil fuels?

A
Wind energy produces larger quantities of energy.
B
Wind energy can be reproduced quickly.
C
Wind energy reliability can be inconsistent.
D
Wind energy produces more pollution.
7

Which describes an effect that ocean currents have on short-term climate change?

A
Ocean currents carry cold water, which may not affect hurricane activity and lower the temperature of the air and land.
B
Ocean currents can carry cold water, which can cool the air and land.
C
Ocean currents increase the strength of prevailing winds, which can cool the air and land.
D
Ocean currents increase hurricane activity, which can raise the temperature of the air and land.
8

Which describes one way that renewable resources differ from nonrenewable resources?

A
Renewable resources are more easily located and harvested.
B
It takes longer to replenish renewable resources.
C
Pollution levels increase with the use of renewable resources.
D
Renewable resources make cleaner energy.
9

Natural resources are classified as renewable and nonrenewable. What is the difference between the two?

A
whether or not the resource can be replaced
B
whether or not the resource is useful to humans
C
whether or not the resource dwindles in supply
D
whether or not the resource exists in nature
10

A conservation biologist has determined the status of the ecosystems in a protected area, as shown in the table. Based on the table, which part of the pie chart represents secondary succession? Status of ecosystems Percentage of protected area Primary succession 10 Secondary succession 30 Barren land 5 Established community 55

A
segment A
B
segment B
C
segment C
D
segment D

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