Across
1
Total number of people in an area
4
Region between the two tropic lines
7
Steep rock face at edge of land
8
Deep narrow valley with steep sides
9
Visual representation of an area
10
Ridge of rock or coral near the surface
11
Land surrounded by water on three sides
Down
2
Chain or group of islands
3
Large area covered with trees
4
Physical features of land
5
Largest ocean on Earth
6
Distance north or south of equator
12
Large natural stream of water
13
Largest river in South America