Autumn leaves are the foliage that changes color and falls from trees during the autumn season. As temperatures drop and daylight decreases, chlorophyll—the green pigment in leaves—breaks down, revealing vibrant hues of red, orange, and yellow. This transformation is a natural part of the life cycle of deciduous trees, which shed their leaves to conserve water and energy during the colder months. The process of leaves changing color is influenced by various factors, including temperature, moisture, and sunlight. Different tree species, such as maple and oak, exhibit unique color patterns, making autumn a visually stunning time of year. The fallen leaves also play a role in the ecosystem, providing nutrients to the soil as they decompose.