Across
1
Raised area of land, smaller than a mountain
4
Wearing away of land by water or wind
5
Cold treeless Arctic plain
7
Region surrounding the North Pole
11
Ridge of rock or coral near the surface
Down
2
Goods brought in from another country
3
Landform where river meets the sea
6
Large area covered with trees
8
Chain or group of islands
9
One of seven major landmasses
10
Low area between mountains
12
Vast body of salt water