Across
1
Wearing away of land by water or wind
3
Landform where river meets the sea
5
City that is seat of government
7
Vast body of salt water
8
Large area covered with trees
10
Large natural elevation of earth
11
Distance east or west of prime meridian
12
Cold treeless Arctic plain
Down
2
Area where water covers the soil
4
Ocean between Americas and Europe/Africa
6
Region near the equator
6
Region between the two tropic lines
9
Largest river in South America