Across
1
Piece of land jutting into the sea
3
Where river meets the sea
4
Cold treeless Arctic plain
7
Low-lying land surrounded by higher ground
9
Land surrounded by water on three sides
10
Wearing away of land by water or wind
Down
2
Half of the Earth
5
Large body of water partly enclosed by land
6
Area where water covers the soil
8
Largest hot desert in the world
11
Flat grassland in tropical regions