Across
1
Large natural stream of water
3
City that is seat of government
4
Low area between mountains
5
Wearing away of land by water or wind
8
Area where water covers the soil
9
Total number of people in an area
10
Largest hot desert in the world
Down
2
Land surrounded by water on three sides
6
Height above sea level
7
Piece of land jutting into the sea
11
Long-term weather patterns of an area