Across
1
Large natural stream of water
3
Total number of people in an area
4
Body of water surrounded by land
9
Area where water covers the soil
10
Large slow-moving mass of ice
12
Cold treeless Arctic plain
Down
2
Height above sea level
5
Piece of land jutting into the sea
6
Region surrounding the North Pole
7
Land surrounded by water
8
Land surrounded by water on three sides
11
Narrow sea inlet between cliffs