Paragraph 3 supports the idea that Gause's experiments were important because they A. provided a situation in which competition could be removed from the interaction between two species B. showed that previous ideas about the extent to which competition determines the composition of a community were completely mistaken. C. helped establish that competition will remove all but one species from any given ecological niche D. offered evidence that competition between species is minimal when there is an overabundance of a single food source