Across
1
Steep rock face at edge of land
3
Cold treeless Arctic plain
4
Seasonal heavy rainfall
8
Low area between mountains
9
Region near the equator
10
Raised area of land, smaller than a mountain
Down
2
Wearing away of land by water or wind
5
Area where water covers the soil
6
Total number of people in an area
7
Largest hot desert in the world