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        9-12

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        Auditory, Visual

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        Stream Only


        Part of QUEST
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        Orca Audio Slide Show | QUEST

        Scientists have determined that the livelihood of southern resident killer whales, or orcas, depends on the availability of chinook salmon in the Pacific Northwest's Puget Sound: when the salmon population is abundant the orcas thrive, but when it's scarce they suffer. Learn more in this QUEST audio slide show produced by KCTS.

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