Changing Climates

4. A very large expanse of sea, particularly each of the main areas into which the sea is divided geographically.
5. A large natural stream of water flowing in a channel to the sea, a lake, or another river.
7. A dense forest, typically in a tropical area, with tangled vegetation.
9. A small, narrow river.
11. The part of the land near the sea; the edge of the land.
13. A large body of saltwater that is often connected to an ocean, partly or completely enclosed by land.
15. A dry, barren area of land with little rainfall and sparse vegetation.
16. A dense, tropical forest with heavy rainfall.
18. A line of mountains connected by high ground.
19. A naturally raised area of land, not as high or craggy as a mountain.

1. A natural underground space large enough for a human to enter.
2. A large area covered chiefly with trees and undergrowth.
3. A large body of water surrounded by land.
6. A low area of land between hills or mountains, often with a river running through it.
8. A slowly moving mass of ice formed by the accumulation and compaction of snow.
10. A large natural elevation of the earth's surface rising abruptly from the surrounding level.
11. A steep face of rock and earth, often near a coast.
12. A place where water flows over a vertical drop or a series of drops in the course of a stream or river.
14. A piece of land surrounded by water.
17. A sandy or pebbly shore by the ocean or a lake.