Across
1
Large area covered with trees
4
Wearing away of land by water or wind
5
Tool for finding directions
7
Cold treeless Arctic plain
8
Distance east or west of prime meridian
Down
2
One of seven major landmasses
3
Seasonal heavy rainfall
6
Large slow-moving mass of ice
9
Region near the equator
10
Region surrounding the North Pole
11
Vast body of salt water
12
Low-lying land surrounded by higher ground
13
Largest hot desert in the world