[請益] 黃金閱讀-The Long-Term Stability of Ecosystems
Many ecologists now think that the relative long-term stability of climax
communities comes not from diversity but from the “patchiness” of the
environment, an environment that varies from place to place supports more
kinds of organisms than an environment that is uniform. A local population that goes extinct is quickly replaced by immigrants from
an adjacent community. Even if the new population is of a different species,
it can approximately fill the niche vacated by the extinct population and
keep the food web intact
11．Which of the sentences below best expresses the essential information in
the highlighted sentence in the passage? Incurred choices change the meaning
in important ways or leave out essential information.
○Ecologists now think that the stability of an environment is a result of
diversity rather than patchiness.
○Patchy environments that vary from place to place do not often have high
species diversity.
○Uniform environments cannot be climax communities because they do not
support as many types of organisms as patchy environments.
○A patchy environment is thought to increase stability because it is able to
support a wide variety of organisms
正確答案是d 可是為什麼c不行...
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