Across
1
Largest river in South America
5
Where river meets the sea
6
Tool for finding directions
Down
2
Low-lying land surrounded by higher ground
3
Region surrounding the North Pole
4
Vast body of salt water
7
Flat elevated area of land
8
Dry land with little rainfall
9
Half of the Earth
10
Chain or group of islands
11
City that is seat of government