Across
1
Region between the two tropic lines
5
Largest hot desert in the world
7
Chain or group of islands
11
Goods sold to another country
Down
2
Flat grassland in tropical regions
3
Low-lying land surrounded by higher ground
4
Flat elevated area of land
6
Wearing away of land by water or wind
8
Imaginary line around the middle of Earth
9
Largest river in South America
10
Large area covered with trees
12
Ridge of rock or coral near the surface