The document discusses how the Fibonacci sequence appears frequently in nature. It introduces Leonardo Fibonacci, the Italian mathematician who documented the sequence, and describes how the sequence is formed by adding the previous two numbers. It then gives several examples of how the Fibonacci sequence shows up in patterns of plant life like flowers, fruit, vegetables, and phyllotaxis. Finally, it explains how the Golden Ratio, a ratio derived from the Fibonacci sequence, is commonly found in art, architecture, nature, and proportions of the human body.