Glacial ice is a type of ice that forms from the accumulation and compaction of snow over many years. As layers of snow build up, the weight compresses the lower layers, turning them into dense ice. This process occurs in cold regions, primarily in polar areas and high mountains, where temperatures remain low enough for snow to persist. Glacial ice is a crucial component of the Earth's climate system. It reflects sunlight, helping to regulate temperatures, and stores freshwater. When glaciers melt, they contribute to rising sea levels, impacting coastal communities and ecosystems. Understanding glacial ice is essential for studying climate change and its effects on the planet.