Across
1
Deep narrow valley with steep sides
5
Height above sea level
6
Low-lying land surrounded by higher ground
7
Flat grassland in tropical regions
11
Total number of people in an area
Down
1
Long-term weather patterns of an area
2
Cold treeless Arctic plain
3
Low area between mountains
4
Land surrounded by water
8
Physical features of land
9
Largest hot desert in the world
10
Area where water covers the soil