Across
1
Imaginary line around the middle of Earth
3
Flat grassland in tropical regions
6
Mountain that can erupt with lava
9
Ocean between Americas and Europe/Africa
10
Cold treeless Arctic plain
11
Half of the Earth
Down
2
Total number of people in an area
4
Low area between mountains
5
Goods sold to another country
7
Visual representation of an area
8
Deep narrow valley with steep sides
12
Large natural elevation of earth