Across
1
Half of the Earth
2
Large area covered with trees
5
Cold treeless Arctic plain
10
Land surrounded by water
11
Largest river in South America
12
Long-term weather patterns of an area
Down
2
Narrow sea inlet between cliffs
3
Large slow-moving mass of ice
4
Height above sea level
6
Region surrounding the North Pole
7
Largest hot desert in the world
8
Flat grassland in tropical regions
9
Seasonal heavy rainfall