An ecologist hypothesizes that predation by a particular owl species is the major factor controlling the population of a particular rabbit species. If this is the case, which of the following population effects could be expected in this rabbit-owl pair?
A) A fall in the owl population should cause a fall in the rabbit population.
B) A fall in the rabbit population should cause an increase in the owl population.
C) An increase in the incidence of disease in the rabbit population should not change the owl population.
D) An increase in the owl population should cause a fall in the rabbit population.
Answer: D
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Fill in the blank(s) with correct word