Across
1
Mountain that can erupt with lava
5
Line dividing two countries
6
Largest hot desert in the world
8
Distance north or south of equator
10
Imaginary line around the middle of Earth
11
Largest river in South America
12
Flat grassland in tropical regions
Down
2
Total number of people in an area
3
Region between the two tropic lines
4
Cold treeless Arctic plain
7
Land surrounded by water
9
Area where water covers the soil
13
Dry land with little rainfall
14
Where river meets the sea