Across
1
Flat grassland in tropical regions
3
Half of the Earth
7
Raised area of land, smaller than a mountain
8
Cold treeless Arctic plain
12
Land surrounded by water
Down
2
Flat elevated area of land
4
Ocean between Americas and Europe/Africa
5
Low-lying land surrounded by higher ground
6
Dry land with little rainfall
9
Total number of people in an area
10
Tool for finding directions
11
Low area between mountains