(1) In East Africa, the Serengeti is the stage upon which a vast wildlife migration of wildebeest occurs involving also lions and crocodiles. This has now been potentially threatened by the construction of a highway. This highway would effectively "slice right through the middle of the wildebeest migration path. According to the book, the highway has been projected to cause all of the following EXCEPT: (a) physical blockage of the migration route of the wildebeeste (b) .--- provide access for poaching (c) provide an entry corridor for exotic plant species that would invade the ecosystem (d) deplete the groundwater quality of the ecosystem as a direct consequence of road salting the highway during the winter months

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