Across
1
Piece of land jutting into the sea
4
Low area between mountains
5
Wearing away of land by water or wind
6
Region surrounding the North Pole
7
Large natural elevation of earth
8
Flat elevated area of land
9
Low-lying land surrounded by higher ground
12
Line dividing two countries
Down
1
Long-term weather patterns of an area
2
Large natural stream of water
3
Land surrounded by water on three sides
10
Cold treeless Arctic plain
11
Largest river in South America
13
Goods sold to another country