Across
1
Cold treeless Arctic plain
4
Low area between mountains
5
Goods brought in from another country
6
Body of water surrounded by land
7
Goods sold to another country
8
Largest ocean on Earth
11
Dry land with little rainfall
Down
2
Total number of people in an area
3
Half of the Earth
7
Where river meets the sea
9
Tool for finding directions
10
Ocean between Americas and Europe/Africa