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These typically include high-mountain zones above tree line, alpine environments inhabited by delicate and slow-growing flora, and deserts and other arid places characterized by low soil moisture.—B. Derrick Taff, The Conversation, 29 Aug. 2025 Hikers reported smoke above Mills and Jewel Lakes close to the tree line on Sunday.—Anna Skinner, MSNBC Newsweek, 25 Aug. 2025 The valley of Morteratsch, where the glacier used to fill it until the tree line on the sides.—Molly Hunter, NBC news, 19 Aug. 2025 Sun slanting through tree line.—AFAR Media, 7 Aug. 2025 See All Example Sentences for tree line
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