Exam 9: Sustaining Biodiversity - the Ecosystem Approach

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Which type of forest naturally develops after the trees in an area have been removed by human activities,such as clear-cutting for timber or conversion to cropland,or by natural forces such as fires and hurricanes?​

(Multiple Choice)
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One way to protect houses and other building in fire-prone areas is to thin trees and other vegetation in a zone around them.

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Why do vines increase the damage to a forest done by selective cutting?​

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Once an area of tropical forest is logged and burned,ranchers can graze cattle there for decades.

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List three ways that wood consumed in the United States is wasted.

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Explain both the positive and negative aspects of the Smokey the Bear educational campaign.

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Natural ecological restoration of riparian areas can happen if ____.​

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About 96% of parklands in less-developed countries are protected.

(True/False)
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The downside of ____________________ ____________________is that,with only one or two tree species,they are much less biologically diverse and less sustainable than old-growth and second-growth forests.

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List two strategies for reducing fire-related harm to forests and to people who use or live in the forests.

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A plant called kenaf would help to reduce the pressure to cut trees because its fiber is very useful for ____.​

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Old-growth forests are also known as ____.​

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A(n)____________________ is a concentration of a particular wild aquatic species suitable for commercial harvesting in a given ocean area or inland body of water.

(Short Answer)
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According to environmental writer Bill McKibben,"the great environmental story of the United States,and in some ways,the whole world" is the ____.​

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The burning and clearing of tropical forests adds carbon dioxide,a(n)____________________ gas,to the atmosphere.

(Short Answer)
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Which country pays landowners to restore tree cover?​

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Describe one possible action that could help restore fish populations harmed by overfishing.

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One way to reduce the demand for tree cutting is to increase the use of throwaway paper products made from trees.

(True/False)
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In Indonesia,Malaysia,and other areas of Southeast Asia,tropical forests are being replaced by large ____ plantations.​

(Multiple Choice)
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What action involves returning a degraded habitat or ecosystem to a condition as similar as possible to its natural state in cases where this is feasible?​

(Multiple Choice)
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