The change of seasons on Earth is caused by the tilt of the Earth's axis and its orbit around the Sun. The Earth's axis is tilted at an angle of approximately 23.5 degrees, which influences the distribution of sunlight received at different latitudes throughout the year. As the Earth revolves around the Sun, this tilt results in varying sunlight intensity and duration, causing seasonal variations. For instance, when the Northern Hemisphere is tilted towards the Sun, it experiences summer, while the Southern Hemisphere experiences winter, and vice versa. This axial tilt is pivotal for creating diverse climates and ecosystems across the globe.