Across
1
Piece of land jutting into the sea
4
Cold treeless Arctic plain
5
Steep rock face at edge of land
6
Seasonal heavy rainfall
8
Land surrounded by water on three sides
9
Line dividing two countries
13
Large area covered with trees
Down
2
Mountain that can erupt with lava
3
Wearing away of land by water or wind
7
Dry land with little rainfall
10
Vast body of salt water
11
Half of the Earth
12
Region between the two tropic lines