Across
1
Goods sold to another country
5
Low-lying land surrounded by higher ground
6
Seasonal heavy rainfall
7
One of seven major landmasses
8
Area where water covers the soil
11
Largest river in South America
Down
2
Cold treeless Arctic plain
3
City that is seat of government
4
Land surrounded by water on three sides
9
Vast body of salt water
10
Total number of people in an area
12
Long-term weather patterns of an area