Across
1
Wearing away of land by water or wind
5
Imaginary line around the middle of Earth
6
Total number of people in an area
7
Distance north or south of equator
8
Land surrounded by water on three sides
10
Steep rock face at edge of land
Down
2
Vast body of salt water
3
Chain or group of islands
4
Line dividing two countries
9
Where river meets the sea
11
Goods brought in from another country