Across
1
Goods sold to another country
4
Line dividing two countries
5
Flat grassland in tropical regions
10
Deep narrow valley with steep sides
12
Vast body of salt water
Down
2
Ridge of rock or coral near the surface
3
Dry land with little rainfall
6
Region surrounding the North Pole
7
Region near the equator
8
Wearing away of land by water or wind
9
Low area between mountains
11
Visual representation of an area