A group of scientists is interested in learning about succession. They design sterilized, artificial habitats on top of buildings in the downtown of a major city to create "green roofs," then they watch as organisms colonize these habitats. After about 5 years, all of the green roof habitats have similar numbers of species and similar species. Which hypothesis is best supported by this observation? Clement's Gleason's Intermediate Disturbance Hypothesis Allopatric Speciation

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