Gause's Experiments with Paramecium and Didinium Showed

Multiple Choice

Gause's experiments with Paramecium and Didinium showed

A) extinction of the predator, followed by extinction of the prey, in all habitats.
B) coexistence of predator and prey at fairly constant population sizes, in all habitats.
C) coexistence of predator and prey, but with oscillating population sizes, in all habitats.
D) coexistence of predator and prey at fairly constant population sizes, but only in the presence of refuges and predator reservoirs.
E) coexistence of predator and prey with oscillating population sizes, but only in the presence of refuges and predator reservoirs.