Across
1
Ridge of rock or coral near the surface
4
Flat grassland in tropical regions
8
Cold treeless Arctic plain
9
Large area covered with trees
11
Landform where river meets the sea
Down
2
Large body of water partly enclosed by land
3
Largest hot desert in the world
5
Largest ocean on Earth
6
Goods sold to another country
7
One of seven major landmasses
10
Narrow sea inlet between cliffs