smithala24 smithala24
  • 17-04-2020
  • Chemistry
contestada

In an ecosystem, the presence of many different species is critical for the
survival of some forms of life when......

A) ecosystems remain stable over long periods of time

B) significant changes occur in the ecosystem

C) natural selection does not occur

Respuesta :

nikkispirit32
nikkispirit32 nikkispirit32
  • 17-04-2020
The correct answer is B
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