Across
1
Flat elevated area of land
3
Large area covered with trees
4
Distance east or west of prime meridian
5
Low-lying land surrounded by higher ground
9
Largest river in South America
Down
1
Largest ocean on Earth
2
Large natural stream of water
6
Cold treeless Arctic plain
7
Tool for finding directions
8
Large natural elevation of earth
10
Landform where river meets the sea
11
Land surrounded by water on three sides