Across
1
Largest river in South America
4
Raised area of land, smaller than a mountain
5
Large area covered with trees
6
Where river meets the sea
7
Largest hot desert in the world
8
Imaginary line around the middle of Earth
11
Vast body of salt water
Down
2
Goods brought in from another country
3
Chain or group of islands
9
Region between the two tropic lines
10
Line dividing two countries