Tree

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tree : a woody perennial plant having a single usually elongate main stem generally with few or no branches on its lower part — Merriam-Webster See also OneLook

Thesaurus

Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords

Encyclopedia

Tree is a perennial plant with an elongated stem, or trunk, supporting branches and leaves in most species. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable as lumber or plants above a specified height. Trees are not a taxonomic group but include a variety of plant species that have independently evolved a woody trunk and branches as a way to tower above other plants to compete for sunlight. In looser senses, the taller palms, the tree ferns, bananas and bamboos are also trees. Trees tend to be long-lived, some reaching several thousand years old. Trees have been in existence for 370 million years. — Wikipedia

Tree (Encyclopædia Britannica)
Tree (Biology Online)

Tree (WolframAlpha)
Tree Growth (WolframAlpha)

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Adventures

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Inspiration

Climbing Giants – Part 1 (National Geographic, YouTube 360° Video)
Giant Sequoias on a Changing Planet – Part 2 (National Geographic, YouTube 360° Video)

Step into an Ancient Forest (VRtually There, YouTube 360° Video)

Travel Deep Inside a Leaf (California Academy of Sciences, YouTube Video)

Talks about Trees (TED: Ideas Worth Spreading)

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Innovation

Science

Arboriculture is the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants. The science of arboriculture studies how these plants grow and respond to cultural practices and to their environment. — Wikipedia

Arboriculture (Encyclopædia Britannica)

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