Landform: A landform is a specific type of physical feature on Earth's surface that has a distinct shape or structure. Examples include mountains, valleys, plateaus, and plains.
Natural Resource: Natural resources are materials or substances found in nature that have economic value. They often originate from physical features such as minerals from mountains or water from rivers.
Erosion: Erosion refers to the process by which weathering and other natural forces gradually wear away rocks and soil on Earth's surface. It can reshape physical features over time.