Across
1
Chain or group of islands
8
Low area between mountains
11
Large natural stream of water
Down
2
Where river meets the sea
3
Region between the two tropic lines
4
Ridge of rock or coral near the surface
5
Large slow-moving mass of ice
6
Cold treeless Arctic plain
7
Imaginary line around the middle of Earth
9
Physical features of land
10
Steep rock face at edge of land