Across
1
Largest hot desert in the world
5
Narrow sea inlet between cliffs
7
Flat grassland in tropical regions
8
Large body of water partly enclosed by land
9
Cold treeless Arctic plain
10
Where river meets the sea
Down
2
Tool for finding directions
3
City that is seat of government
4
Total number of people in an area
6
Ridge of rock or coral near the surface
11
Wearing away of land by water or wind