Across
1
Region near the equator
5
One of seven major landmasses
6
Wearing away of land by water or wind
9
Large natural stream of water
10
Piece of land jutting into the sea
11
Steep rock face at edge of land
12
Cold treeless Arctic plain
Down
2
Dry land with little rainfall
3
Ridge of rock or coral near the surface
4
Deep narrow valley with steep sides
7
Chain or group of islands
8
Land surrounded by water on three sides