What is a rule used a pattern seen in nature?

One prominent rule that reflects patterns in nature is the Fibonacci sequence, where each number is the sum of the two preceding ones. This sequence often appears in biological settings, such as the arrangement of leaves around a stem, the branching of trees, and the patterns of seeds in sunflowers. The Fibonacci spiral, derived from this sequence, can also be observed in the shapes of shells and hurricanes, illustrating how mathematics underpins natural forms. Such patterns emphasize the interconnectedness of mathematics and the natural world.