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Climate and Change in ecosystems (pretest)
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Terms in this set (11)
Climate warming trends allow plant and insect species to inhabit larger ranges?
true
Habitat change can occur through natural causes
true
Succession occurs when environmental factors affecting an ecosystem change
True
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
A. their growing and flowering season starts earlier and is longer
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
B. increased plant mortality
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
D. all of the above
Environmental factors can cause various changes in ecosystems. Which of the following would most likely have the greatest lasting effect on an ecosystem?
a.
a seasonal excess of fertilizer runoff
b.
a disease among a population
c.
change to the landscape from construction
d.
seasonal drought
C. change to the landscape from construction
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.
B. the benefits outweigh the disadvantages
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.
B. have a greater detrimental effect on the sea than the land
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
C. a and b
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.
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