Q: 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
Correct Answer: (b)
The correct answer is (b): Niche replacement. Subject: Geography | Sub-topic: Population & Demography Note: This answer was determined through AI-based research. Verify against the official answer key when available.