Final answer:
When a glacier recedes, it leaves behind moraines, which are mounds of rocks and soil that hint at the glacier's past presence and movement.
Step-by-step explanation:
Typically when a glacier recedes, the deposited material leaves behind an array of geologic features, including moraines, which are mounds of rock and soil. Glaciers, these powerful agents of change, have the ability to transport vast amounts of sediment, ranging from fine silt to large boulders, and deposit them across landscapes as they melt and retreat. These deposits, often poorly sorted due to the mixed-size nature of glacial debris, can consist of materials like conglomerate, breccia, sandstone, and shale. Additionally, glacial action can lead to the development of new soils and varied topographies, which impact the ecosystem and human settlements long after the glaciers themselves have disappeared.