2. The passage suggests that removing waterfowl-nest predators could possibly have a negative effect on songbird populations because
A. songbird populations could then grow to unsustainable numbers
B. small-mammal population could then move out of the uplands into wetland areas
C. competition among remaining waterfowl-nest predators could decrease significantly
D. a resulting increase in waterfowl populations could crowd out songbird populations
E. a resulting increase in small-mammal populations could increase small-mammal predation on songbirds
3. It can be inferred that the habitat preferences of raccoons and striped skunks affected the results of the experiment described in the passage for which of the following reasons?
A. Songbird nests in the wetlands are usually located in places that most waterfowl-nest predators cannot reach.
B. Raccoons and striped skunks are not usually found in areas where songbird nests tend to be located.
C. Mice and ground squirrels tend to avoid predation by raccoons and striped skunks by remaining exclusively in the uplands.
D. The populations of small mammals in the wetlands are usually controlled by larger waterfowl-nest predators such as raccoons and striped skunks.
E. The waterfowl on which raccoons and striped skunks prey in the wetlands compete with songbirds for food.
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