Knowing only its location and geological history, you would expect the Olympic Peninsula to harbor a unique collection of organisms because A. its isolation from the rest of the continent during the last 20,000 years would cause the organisms living there to accumulate unique alleles and traits not shared with their close relatives. B. it is surrounded on three sides by water, continuing the physical isolation that causes unique traits to accumulate. C. the Olympic Mountains create a massive cooling effect, which in turn leads to unique selection pressures on the peninsula's organisms. D. A and B E. A, B, and C