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Climate and Change in Ecosystems Answers

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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
2
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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
3

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.
4

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
5

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
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

Ecosystems have trouble adjusting to short-term changes.

A
T
B
F
8

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
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

What is a possible consequence of climate change to species that have a narrow temperature tolerance range?

A
extinction
B
decreased population
C
changes in migratory patterns
D
all of the above

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