Across
1
Flat grassland in tropical regions
5
Large natural elevation of earth
7
Region surrounding the North Pole
8
Area where water covers the soil
9
Low area between mountains
10
Large natural stream of water
12
Distance east or west of prime meridian
Down
2
Deep narrow valley with steep sides
3
Landform where river meets the sea
4
Land surrounded by water on three sides
6
Goods brought in from another country
11
Piece of land jutting into the sea