Across
1
Region surrounding the North Pole
3
Flat grassland in tropical regions
6
Goods sold to another country
Down
2
Mountain that can erupt with lava
3
Largest hot desert in the world
4
Flat elevated area of land
5
Low-lying land surrounded by higher ground
7
Region between the two tropic lines
8
Half of the Earth
9
Imaginary line around the middle of Earth