Across
1
Cold treeless Arctic plain
2
Height above sea level
5
Region near the equator
6
Distance east or west of prime meridian
7
Total number of people in an area
8
Piece of land jutting into the sea
9
Large slow-moving mass of ice
10
Region surrounding the North Pole
Down
2
Largest river in South America
3
Dry land with little rainfall
4
Ocean between Americas and Europe/Africa
11
Mountain that can erupt with lava
12
Tool for finding directions