AnswersSC332 Environmental Science BClimate and Change in Ecosystems

Climate and Change in Ecosystems Answers

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1
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How does an early onset of spring through climate change affect plants?

A
their growing and flowering season starts earlier and is longer
B
their growing and flowering season starts later and is longer
C
their growing and flowering season starts earlier and is shorter
D
their growing and flowering season starts later and is shorter
2
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Which of the following could cause a habitat change?

A
introduction of an invasive species
B
a wildfire
C
a mudslide
D
all of the above
3

Pollution is the only way that humans can cause changes to ecosystems.

A
T
B
F
4

How do the benefits of natural change to ecosystems compare to the disadvantages?

A
The benefits are outweighed by the disadvantages.
B
The benefits outweigh the disadvantages.
C
The benefits are equal to the disadvantages.
D
There are no disadvantages to natural change in ecosystems.
5

Rising levels of carbon dioxide most likely

A
have a greater detrimental effect on the land than the sea.
B
have a greater detrimental effect on the sea than the land.
C
can increase productivity on the land and the sea.
D
can decrease productivity on the land and the sea.
6

Climate warming trends allow plant and insect species to inhabit larger ranges.

A
T
B
F
7

Fish populations and other aquatic resources are likely to be affected by changes in what aquatic factors?

A
water temperatures
B
disease
C
water quality
D
all of the above
8

Which of the following is not a possible effect of rising carbon dioxide levels on plants?

A
increased photosynthesis
B
increased plant mortality
C
increased crop productivity
D
increased plant growth
9

What effect can fertilizer runoff have on an aquatic ecosystem?

A
increased plant growth leading to a decrease in fish populations
B
increased plant growth leading to an increase in fish populations
C
decreased plant growth leading to a decrease in fish populations
D
decreased plant growth leading to an increase in fish populations
10

Ecosystems have trouble adjusting to short-term changes.

A
T
B
F
11

Climate changes can produce various effects in ecosystems. Which of the following is a way that marine ecosystems can be affected by climate warming trends?

A
decreased ocean acidity
B
increased populations of fish
C
decreased levels of carbonate
D
all of the above
12

Which of the following could cause a habitat change?

A
introduction of an invasive species
B
a wildfire
C
a mudslide
D
all of the above
13

Which of the following is not a possible effect of rising carbon dioxide levels on plants?

A
increased photosynthesis
B
increased plant mortality
C
increased crop productivity
D
increased plant growth
14

How could climate change affect the ecosystems of the island nation of Samoa?

A
increased cyclone activity could damage land plants and coral reefs
B
increasing global temperatures could raise ocean levels and temperatures subsequently damaging aquatic environments
C
a and b
D
none of the above
15

Fish populations and other aquatic resources are likely to be affected by changes in what aquatic factors?

A
water temperatures
B
disease
C
water quality
D
all of the above
16

Which scenario best describes how climate trends might affect animal migration?

A
Animals found in the Arctic may move south.
B
Animals found at the equator may move north.
C
Animals found in higher elevations will move to lower elevations.
D
Animals found in lower elevations will stay in the same location.
17

Habitat change can occur through natural causes.

A
T
B
F
18

Succession occurs when environmental factors affect an ecosystem change. Please select the best answer from the choices provided

A
T
B
F
19

Ecosystems have trouble adjusting to short-term changes.

A
T
B
F
20

Environmental factors can have various effects on ecosystems. In August 2005, Hurricane Katrina caused significant damage in several states along the Gulf Coast, including Alabama, Mississippi, and Louisiana. Thousands of people were evacuated from their homes due to flooding and other damage caused by the storm. What environmental impact would Hurricane Katrina not have caused?

A
early onset of spring
B
change in marine ecosystems
C
change in animal migration
D
change in habitats

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