GRE Reading Comprehension: PPO-GRE阅读PPO - 714X61481M3DQ47ZR

The passage suggests that population fluctuations in many other animal species differ from those of the snowshoe hare in that population fluctuations in other species A. are less regular due to more erratic changes in predator levels B. typically occur over a longer time period C. are synchronized over larger areas D. are less dependent on food availability E. are typically less predictable