Across
1
Large natural stream of water
4
Largest hot desert in the world
5
Total number of people in an area
11
Raised area of land, smaller than a mountain
14
Seasonal heavy rainfall
Down
2
Region between the two tropic lines
3
Ridge of rock or coral near the surface
6
Flat grassland in tropical regions
7
Long-term weather patterns of an area
8
Deep narrow valley with steep sides
9
Height above sea level
10
Visual representation of an area
12
Largest river in South America
13
Chain or group of islands