Across
1
Cold treeless Arctic plain
4
Long-term weather patterns of an area
5
Vast body of salt water
6
Area where water covers the soil
7
Wearing away of land by water or wind
9
Raised area of land, smaller than a mountain
Down
1
Region between the two tropic lines
2
Mountain that can erupt with lava
3
Large area covered with trees
8
Land surrounded by water on three sides