Across
1
Total number of people in an area
6
Line dividing two countries
7
Deep narrow valley with steep sides
10
Land surrounded by water
11
Ridge of rock or coral near the surface
13
Chain or group of islands
Down
2
Largest river in South America
3
Distance east or west of prime meridian
4
Low area between mountains
5
Physical features of land
8
Vast body of salt water
9
Dry land with little rainfall
12
Steep rock face at edge of land
14
Large body of water partly enclosed by land