Glacial ice is primarily composed of freshwater. Glaciers form when layers of snow accumulate over time and compress into ice, creating large ice masses. This ice is formed from the accumulation and compaction of snowflakes, which preserve their freshwater content throughout the process. As glaciers move, they can carry and store significant amounts of freshwater, playing a critical role in regulating global water supply and sea levels. When glacial ice melts due to climate change, it contributes to rising sea levels, affecting coastal communities and ecosystems.