To his delight, the tree structure's numbers were higher.

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So, to cut to the logical chase, what you have is a many-to-many mapping with a hierarchical (family tree) structure.

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Google searches uncovered that a mathematical concept called the Fibonacci number sequence underlies the structure of tree branches.

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One of the byelaws prohibits "people climbing on any wall, fence, tree, barrier, railing or structure without a reasonable excuse".

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Embellishment can precede structure, like a tree sprouting leaves before branches.

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Ultimately, higher tree mortality may lead to significant shifts in forest structure and function, the report states.

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The tree that carried my ax head did not die, but it lost a major stabilizing part of its structure.

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