The Bergeron Process is a meteorological theory that explains how precipitation forms in clouds. It involves the coexistence of ice crystals and supercooled water droplets within a cloud. The ice crystals grow larger as they attract water vapor, while the supercooled droplets evaporate, leading to the formation of larger ice particles. As these ice particles become heavy enough, they fall to the ground as precipitation, such as snow or rain. This process is essential for understanding how different types of precipitation occur, particularly in cold weather systems, and is named after the scientist Henri Bergeron, who contributed to its development.