Nature

2. A usually rounded natural elevation of land lower than a mountain.
4. A region with a high density of trees.
7. An area of land permanently saturated, or filled, with water.
8. Water, especially from a river or stream, dropping from a higher to a lower point, sometimes from a great height.
9. A large area of flat land.
12. A natural elevation of the earth's surface rising more or less abruptly to a summit.
13. An area often covered with rocks and sand where there is very little rain and not many plants.

1. A natural wide flow of fresh water across the land into the sea.
3. A large, flat area of land covered with grass, usually with few trees, that is found in hot countries,especially in Africa.
5. The whole body of salt water that covers nearly three fourths of the surface of the earth.
6. A portion of the ocean that is partly surrounded by land.
9. A small area of still, fresh water.
10. An impenetrable thicket or tangled mass of tropical vegetation.
11. A large area of water surrounded by land.
12. Land that is covered or mostly covered with grass.