Across
1
Cold treeless Arctic plain
5
Piece of land jutting into the sea
6
Vast body of salt water
7
Wearing away of land by water or wind
8
Largest hot desert in the world
10
Flat grassland in tropical regions
11
One of seven major landmasses
Down
2
Mountain that can erupt with lava
3
Large natural elevation of earth
4
Large natural stream of water
9
Distance east or west of prime meridian
12
Land surrounded by water