Long Lake is the highest, largest, and deepest lake in Jiuzhaigou Valley, a UNESCO biosphere preserve in southern China. Jiuzhaigou Valley is part of the Minshan Mountains, a transition zone between the Sichuan Basin and the Qinghai-Tibet plateau.

Photograph by Wah Joon Cheong, MyShot
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biosphere
biosphere Encyclopedic Entry

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5-12+

Subjects
Religion, Geography

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Encyclopedic entry. The biosphere is made up of the parts of Earth where life exists. The biosphere extends from the deepest root systems of trees, to the dark environment of ocean trenches, to lush rain forests and high mountaintops.