Across
1
Distance east or west of prime meridian
4
Largest hot desert in the world
7
Landform where river meets the sea
8
Imaginary line around the middle of Earth
9
Cold treeless Arctic plain
12
Region between the two tropic lines
Down
2
Vast body of salt water
3
Where river meets the sea
5
Distance north or south of equator
6
Chain or group of islands
10
Tool for finding directions
11
Large area covered with trees