Natural features

3. A steep, vertical, or nearly vertical rock face or precipice, typically found along coastlines or riverbanks.
5. A low area of land between hills or mountains, often with a river running through it.
11. Mounds or ridges of sand formed by wind action, commonly found in desert landscapes and coastal areas.
13. A large, flowing body of water that typically empties into an ocean, sea, or lake and is fed by tributaries.
14. An opening in the Earth's crust through which molten rock, ash, and gases can erupt, forming a mountain or hill.
15. A disturbance that travels through water, characterized by the rise and fall of the surface, often caused by wind or seismic activity.

1. A dense forest typically found in tropical areas, characterized by high rainfall, biodiversity, and a variety of plant and animal species.
2. A barren area of land with little precipitation, resulting in scant vegetation and extreme temperature variations.
4. A large inland body of standing water, usually freshwater, but can also be saltwater.
6. A large landform that rises prominently above its surroundings, typically characterized by steep slopes, a defined summit, and significant elevation.
7. A vast body of saltwater that covers nearly three-quarters of the Earth's surface and is divided into several large bodies, such as the Atlantic, Pacific, and Indian Oceans.
8. A natural underground space large enough for a human to enter, formed by geological processes such as erosion.
9. A term used to describe a waterfall, where water cascades over a vertical drop or cliff.
10. A sandy or pebbly area along the shore of an ocean, sea, lake, or river, often used for recreation.
12. A large body of saltwater that is smaller than an ocean and is partially enclosed by land.