Erosion is the process by which natural forces like wind, water, and ice wear away rocks and soil. Over time, these forces can change landscapes, creating valleys, canyons, and other features. For example, rivers can carve deep paths through mountains, while strong winds can shift sand in deserts, forming dunes. This process can also affect human activities, such as farming and construction. When soil erodes, it can lead to loss of fertile land, making it harder to grow crops. To combat erosion, people often use methods like planting trees or building barriers to protect the soil from rain and wind.