Seasonal variations refer to the changes that occur in natural processes, climates, and environments throughout the year. These variations are typically driven by factors such as changes in temperature, sunlight, precipitation, and the Earth's position relative to the sun. Seasonal variations can have a significant impact on ecological processes, agricultural productivity, human health, and various other aspects of life. Researchers in this area study the patterns and causes of seasonal variations in order to better understand and predict how they may influence various systems.