A) Alien's law
B) Cause's hypothesis
C) Dollo's rule
D) Weisman's theory
Correct Answer: B
Solution :
[b] Cause's hypothesis states that two different competing species cannot coexist together for a long in the same niche, one has to get eliminated by the other competing species, if they do coexist, then they do so as a result of niche differentiation, i.e. differentiation of then realized niches.
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