Across
1
Region between the two tropic lines
3
Area where water covers the soil
7
Low-lying land surrounded by higher ground
8
Seasonal heavy rainfall
9
Cold treeless Arctic plain
10
Ridge of rock or coral near the surface
11
Steep rock face at edge of land
Down
2
Largest hot desert in the world
4
Body of water surrounded by land
5
Distance east or west of prime meridian
6
Half of the Earth