Across
1
Wearing away of land by water or wind
5
Cold treeless Arctic plain
6
Area where water covers the soil
7
Largest ocean on Earth
8
Region near the equator
11
Height above sea level
12
Chain or group of islands
Down
2
Steep rock face at edge of land
3
Half of the Earth
4
Physical features of land
9
Landform where river meets the sea
10
Imaginary line around the middle of Earth