Why does the esrth have seasons?

The Earth has seasons due to its axial tilt of approximately 23.5 degrees as it orbits the Sun. This tilt causes different parts of the Earth to receive varying amounts of sunlight throughout the year, leading to changes in temperature and daylight. When the Northern Hemisphere is tilted toward the Sun, it experiences summer, while the Southern Hemisphere experiences winter, and vice versa. These seasonal changes are cyclical and repeat annually as the Earth continues its orbit.