Seasonal variations refer to the changes in weather and environmental conditions that occur at different times of the year. These changes are primarily driven by the tilt of the Earth's axis and its orbit around the Sun. As a result, regions experience distinct seasons, such as spring, summer, autumn, and winter, each with unique temperature patterns, precipitation levels, and daylight hours. These variations affect ecosystems, agriculture, and human activities. For example, many plants and animals have adapted to these seasonal changes, influencing their growth cycles and behaviors. Additionally, farmers often plan their planting and harvesting schedules based on seasonal variations to optimize crop yields.