Across
1
Large slow-moving mass of ice
3
Cold treeless Arctic plain
5
Total number of people in an area
6
Seasonal heavy rainfall
7
Large area covered with trees
8
Deep narrow valley with steep sides
9
Physical features of land
10
Flat grassland in tropical regions
11
Mountain that can erupt with lava
Down
2
Chain or group of islands
3
Region near the equator
4
Imaginary line around the middle of Earth
12
Low area between mountains