Across
1
Large natural stream of water
4
Largest hot desert in the world
5
Flat grassland in tropical regions
6
Narrow sea inlet between cliffs
7
Large natural elevation of earth
8
Mountain that can erupt with lava
10
Goods sold to another country
12
Half of the Earth
Down
2
Line dividing two countries
3
Land surrounded by water on three sides
9
Total number of people in an area
11
Physical features of land