It's remarkable, really. I think perhaps the most compelling thing about it is that it gives us the opportunity to ask and answer many evolutionary questions.

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So you can end up with lots of endemics in a small area. That's what appears to have happened in Sequoia and King's Canyon.

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We don't know how long they live, what kind of habitat they prefer, how many offspring they have, or how sensitive they are to human disturbance. There's still so much to learn.

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