Across
1
Region surrounding the North Pole
5
Area where water covers the soil
6
Seasonal heavy rainfall
7
Low area between mountains
8
Flat grassland in tropical regions
10
Vast body of salt water
Down
1
Chain or group of islands
2
Steep rock face at edge of land
3
Imaginary line around the middle of Earth
4
Low-lying land surrounded by higher ground
9
Total number of people in an area