Answer:
Erosion is the process of wear and tear on the Earth's surface caused by natural forces such as water, wind, and ice. It involves the removal of soil, rock, and other materials from one location and their transport to another. Accumulation, on the other hand, is the opposite process, involving the build-up of materials in a specific location. This can occur through processes such as sedimentation, where particles are deposited by water or wind, or through the accumulation of organic matter through the decomposition of plants and animals. Both erosion and accumulation play important roles in shaping the Earth's landscape and influencing the movement of materials within the environment.