Across
1
Region near the equator
4
Cold treeless Arctic plain
6
Half of the Earth
7
Steep rock face at edge of land
8
Flat grassland in tropical regions
9
Largest hot desert in the world
Down
2
Imaginary line around the middle of Earth
3
Chain or group of islands
5
Ocean between Americas and Europe/Africa
10
Ridge of rock or coral near the surface