Hills are elevated landforms that rise above the surrounding terrain, typically characterized by a rounded or sloping shape. They are smaller than mountains and can vary in height and steepness. Hills are formed through various geological processes, including erosion, sediment deposition, and volcanic activity. They can be found in many environments, from rural landscapes to urban areas. Hills often play a significant role in ecosystems, providing habitats for various plants and animals. They can influence local climate and weather patterns, as well as serve as natural barriers. Popular activities on hills include hiking, biking, and enjoying scenic views, making them attractive destinations for outdoor enthusiasts.