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  3. Widespread climate change challenges traditional notions that preserving spe

Widespread climate change challenges traditional notions that preserving spe

游客2024-01-10  48
问题     Widespread climate change challenges traditional notions that preserving specific chunks of land is an adequate way to protect endangered species. Commitment to particular places has taken conservation a long way, but it works only when the climate is relatively stable. When climate change rather than degraded habitat threatens a species’ survival in a particular location, moving the species to new locales might become one way of preserving it. Some ecologists argue that such assisted migration is simply a way to mimic the natural process of dispersal: its adherents intend to transport species from places that have become uninhabitable through places that humans have made impassable. Although it has its risks, assisted migration may be a necessary step in the evolution of conservation. [br] The author of the passage implies that some endangered species are unlikely to migrate naturally to habitats better suited to their survival because
选项 A、climate change is making such habitats disappear
B、few if any viable routes to such habitats exist
C、the pace of natural migration is typically slower than the current pace of climate change
D、their numbers are already below the thresholds necessary for the typically random processes of natural dispersal
E、their dependency on their current habitats is too strong
答案 B
解析 根据第四句，濒危物种要在人类的帮助下被迁移到被人类搞得无法穿行的地带，因此自然状况下濒危物种到不了合适的栖息地的原因就是这些栖息地被人类阻碍了，所以选项B正确。
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