Across
1
Cold treeless Arctic plain
4
Region surrounding the North Pole
6
Ridge of rock or coral near the surface
7
Raised area of land, smaller than a mountain
9
Deep narrow valley with steep sides
10
Line dividing two countries
11
Flat elevated area of land
12
Region near the equator
Down
2
Visual representation of an area
3
Long-term weather patterns of an area
5
Dry land with little rainfall
8
Goods sold to another country
13
Half of the Earth