Across
1
Region surrounding the North Pole
4
Wearing away of land by water or wind
5
Low-lying land surrounded by higher ground
6
Flat elevated area of land
10
Body of water surrounded by land
12
Large natural stream of water
Down
2
Deep narrow valley with steep sides
3
Imaginary line around the middle of Earth
7
Raised area of land, smaller than a mountain
8
Goods brought in from another country
9
Largest hot desert in the world
11
City that is seat of government