Few states show more dramatic contrasts in their environment than Washington. Elevations range from sea level to over 14,000 feet. Precipitation varies from over 200 inches annually on the Olympic Peninsula, nurturing a temperate rain forest and mountaintop glaciers, to a mere six inches in parts of the Columbia Basin, where near-desert conditions prevail. The primary reason for these contrasts is the Cascade Range, which runs from north to south...
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Nature