Across
1
Total number of people in an area
6
Imaginary line around the middle of Earth
7
Largest river in South America
9
Flat grassland in tropical regions
11
Region surrounding the North Pole
Down
2
Vast body of salt water
3
Low-lying land surrounded by higher ground
4
Physical features of land
5
Height above sea level
8
Seasonal heavy rainfall
10
Tool for finding directions
12
Distance north or south of equator
13
Long-term weather patterns of an area
14
Cold treeless Arctic plain