Across
1
Line dividing two countries
2
Flat grassland in tropical regions
4
Goods brought in from another country
5
Distance east or west of prime meridian
6
Cold treeless Arctic plain
9
Half of the Earth
11
Imaginary line around the middle of Earth
Down
2
Largest hot desert in the world
3
Where river meets the sea
7
Low area between mountains
8
Distance north or south of equator
10
Large slow-moving mass of ice
12
Goods sold to another country