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The causes of this population rebound are consequences of other human actions. First, the major predators of deer—wolves, cougar
The causes of this population rebound are consequences of other human actions. First, the major predators of deer—wolves, cougar
admin
2014-09-29
71
问题
The causes of this population
rebound
are consequences of other human actions. First, the major predators of deer—wolves, cougar, and lynx—have been greatly reduced in numbers. Second, conservation has been insured by limiting times for and types of hunting. But the most profound reason for the restoration of high population numbers has been the fate of the forests. Great tracts of lowland country deforested by logging, fire, or both have become ideal feeding grounds for deer.
In addition to finding an increase of suitable browse, like huckleberry and vine maple, Arthur Einarsen, longtime game biologist in the Pacific Northwest, found quality of browse in the open areas to be substantially more nutritive.
The protein content of shade-grown vegetation, for example, was much lower than that for plants grown in clearings.
Which of the following is NOT mentioned in paragraph 5 as a factor that has increased deer populations?
选项
A、A reduction in the number of predators
B、Restrictions on hunting
C、The effects of logging and fire
D、Laws that protect feeding grounds of deer
答案
D
解析
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