Across
1
Dry land with little rainfall
4
Region surrounding the North Pole
6
Steep rock face at edge of land
7
Vast body of salt water
8
Low-lying land surrounded by higher ground
9
Deep narrow valley with steep sides
10
Half of the Earth
Down
2
Region between the two tropic lines
3
Large natural elevation of earth
5
Where river meets the sea
11
Cold treeless Arctic plain
12
Total number of people in an area
13
Physical features of land