Across
1
Low area between mountains
4
Mountain that can erupt with lava
5
Large natural elevation of earth
6
Largest hot desert in the world
8
Region surrounding the North Pole
9
Line dividing two countries
10
Low-lying land surrounded by higher ground
Down
2
Total number of people in an area
3
Wearing away of land by water or wind
7
Landform where river meets the sea