Across
1
Vast body of salt water
4
Large natural elevation of earth
6
City that is seat of government
7
Deep narrow valley with steep sides
8
Low-lying land surrounded by higher ground
9
Cold treeless Arctic plain
10
One of seven major landmasses
11
Large area covered with trees
13
Body of water surrounded by land
Down
2
Chain or group of islands
3
Largest ocean on Earth
5
Long-term weather patterns of an area
12
Largest river in South America