Across
1
Cold treeless Arctic plain
4
Narrow sea inlet between cliffs
5
Mountain that can erupt with lava
6
Piece of land jutting into the sea
7
Total number of people in an area
8
Vast body of salt water
Down
2
Large slow-moving mass of ice
3
Large natural elevation of earth
9
Seasonal heavy rainfall
10
Where river meets the sea
11
Steep rock face at edge of land
12
Long-term weather patterns of an area
13
Half of the Earth