Across
1
Land surrounded by water
4
Wearing away of land by water or wind
5
Chain or group of islands
6
Area where water covers the soil
7
Large area covered with trees
13
Where river meets the sea
Down
2
Total number of people in an area
3
Low-lying land surrounded by higher ground
8
Largest hot desert in the world
9
Narrow sea inlet between cliffs
10
Dry land with little rainfall
11
Height above sea level
12
Large natural stream of water