TOEFL Reading: ETS-TOEFL阅读机经 - EXEAL8P6B4EOF37BL$

According to paragraph 3, a decline in the vole population in Alaska may have which TWO of the following consequences. To receive credit, you must select TWO answer choices. A. Some predators may have less to eat. B. Hawk and red squirrel populations may be more successful. C. Plants may find it more difficult to absorb water and nutrients. D. Mycorrhizal fungi numbers may increase.