Climate and Change in Ecosystems Answers

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1
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Climate warming trends allow plant and insect species to inhabit larger ranges.

A
T
B
F
2
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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
3

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.
4

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.
5

How does change to an ecosystem that results in succession benefit the ecosystem?

A
it leads to an increased level of biodiversity
B
it leads to decreased productivity
C
it ends symbiosis between organisms
D
it allows ecosystems to operate independently of each other
6

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
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

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

A
T
B
F
9

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
10

Ecosystems have trouble adjusting to short-term changes.

A
T
B
F

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