Across
1
Ocean between Americas and Europe/Africa
6
Flat grassland in tropical regions
8
Physical features of land
10
Low-lying land surrounded by higher ground
12
Landform where river meets the sea
Down
2
Wearing away of land by water or wind
3
Total number of people in an area
4
Area where water covers the soil
5
Large natural elevation of earth
7
Land surrounded by water
9
Cold treeless Arctic plain
11
Low area between mountains