案例分析题 According to the passage, scientists cannot explain which of the following aspects of squirrel behavior A: Where squirrels store their acorn caches B: Why squirrels prefer acorns over other seeds C: Why squirrels eat only a portion of each acorn they retrieve D: Why squirrels prefer acorns from a particular species of oak trees

案例分析题 Why does the author mention "the University of Indiana campus" in line 10-11 A: To provide evidence that intact acorns are hard to find under oak trees B: To indicate a place where squirrels can aid seed dispersal of oaks C: To argue in favor of additional studies concerning the destructive force of squirrels D: To support the claim that squirrels can do great damage to oak stands