Across
1
Land surrounded by water
4
Ridge of rock or coral near the surface
6
Large area covered with trees
8
Region surrounding the North Pole
10
Mountain that can erupt with lava
11
Imaginary line around the middle of Earth
Down
2
Large body of water partly enclosed by land
3
Narrow sea inlet between cliffs
5
Region near the equator
7
Low-lying land surrounded by higher ground
9
Low area between mountains
12
Chain or group of islands