2. 外语
  3. Clements was challenged by another pioneer ecologist, Henry Gleason, who took the opposite view. Gleason viewed the community as

Clements was challenged by another pioneer ecologist, Henry Gleason, who took the opposite view. Gleason viewed the community as

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问题     Clements was challenged by another pioneer ecologist, Henry Gleason, who took the opposite view. Gleason viewed the community as largely a group of species with similar tolerances to the stresses imposed by climate and other factors typical of the region. Gleason saw the element of chance as important in influencing where species occurred. His concept of the community suggests that nature is not highly integrated. Gleason thought succession could take numerous directions, depending upon local circumstances.
According to Gleason in paragraph 3, the occurrence of a species in a particular community is influenced by
选项 A、unpredictable events
B、how individualistic the species is
C、the number of other species present
D、the tolerance of other species to stresses
答案A
解析
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