Various - formation family e.p - List of formations in American football - Wikipedia

Psychologist Bruce Tuckman first came up with the memorable phrase "forming, storming, norming, and performing" in his 1965 article, " Developmental Sequence in Small Groups ." He used it to describe the path that most teams follow on their way to high performance. Later, he added a fifth stage, "adjourning" (which is sometimes known as "mourning").

Stalagmites have thicker proportions and grow up on the bottom of a cavern from the same drip-water source, the mineral from which is deposited after the water droplet falls across the open space in the rock. Not every stalactite has a complementary stalagmite, and many of the latter may have no stalactite above them. Where the paired relation exists, however, continual elongation of one or both may eventually result in a junction and the formation of a column.

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