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Section 2.4
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1
The clearing of large forested areas can lead to...
A)biomagnification
B)sustainability.
C)intensification
D)desertification
2
Which of the following best describes what happens when a watershed has been cleared of trees?
A)nutrients become limited
B)erosion in the area decreases
C)biodiversity increases
D)reduced pollutants in the air.
3
Scientists believe that honeybee populations in North America have been decreasing due to…
A)self-pollination by plants.
B)competition from bats.
C)cell phone use.
D)increased numbers of decomposers.
4
What is the most likely reason for the decline in the population of bank swallows in North America?
A)global warming
B)restoration of forested areas
C)banning of pesticides
D)habitat destruction in South America
5
What term describes the need for international co-operation in keeping ecosystems sustainable?
A)monoculture
B)ecotourism
C)ecological connectivity
D)eutrophication





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