Across
1
Vast body of salt water
4
Land surrounded by water
5
Landform where river meets the sea
7
Land surrounded by water on three sides
8
Region near the equator
Down
2
Mountain that can erupt with lava
3
Cold treeless Arctic plain
6
Region surrounding the North Pole
9
Large body of water partly enclosed by land
10
Flat grassland in tropical regions
11
Ridge of rock or coral near the surface