QuestionEcology / competition
When *Paramecium caudatum* and *Paramecium aurelia* are cultured together under ideal laboratory conditions, the population of *Paramecium caudatum* may gradually be completely disappeared. Which one of the following laws or principles correctly explains it?
- (a) Niche expansion
- (b) Niche replacement
- (c) Competitive exclusion principle
- (d) Adaptive radiation
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