Across
1
Line dividing two countries
4
Land surrounded by water
5
Deep narrow valley with steep sides
7
Large body of water partly enclosed by land
8
Largest river in South America
9
Low area between mountains
11
Visual representation of an area
Down
2
Total number of people in an area
3
Landform where river meets the sea
6
Long-term weather patterns of an area
10
Area where water covers the soil