Across
1
Region between the two tropic lines
5
Largest ocean on Earth
7
Distance north or south of equator
8
Flat grassland in tropical regions
12
Total number of people in an area
Down
2
Largest river in South America
3
Low-lying land surrounded by higher ground
4
Largest hot desert in the world
6
Imaginary line around the middle of Earth
9
Chain or group of islands
10
Region near the equator
11
Large natural elevation of earth