Chapter 47: Q 11. (page 1400)
What is an ecosystem service that performs the same function as a pesticide?
a. pollination
b. secondary plant compounds
c. crop diversity
d. predators of pests
The correct option is (d)
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Describe two considerations in conservation preserve design
Describe the mechanisms by which the human population
growth and resource use causes increased extinction
rates.
About what percentage of land on the planet is set aside
as a preserve of some type?
a. 1 percent
b. 6 percent
c. 11 percent
d. 15 percent
Describe what happens to an ecosystem when a keystone species is removed.
With an extinction rate of 100 E/MSY and an estimated 10
million species, how many extinctions are expected to
occur in a century?
a. 100
b. 10,000
c. 100,000
d. 1,000,000
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