Across
1
Cold treeless Arctic plain
4
Where river meets the sea
5
Large natural elevation of earth
9
Wearing away of land by water or wind
10
Distance north or south of equator
11
Line dividing two countries
Down
2
Total number of people in an area
3
Seasonal heavy rainfall
4
Imaginary line around the middle of Earth
6
Chain or group of islands
7
Tool for finding directions
8
Land surrounded by water