Across
1
Land surrounded by water on three sides
7
Wearing away of land by water or wind
8
Distance east or west of prime meridian
9
Seasonal heavy rainfall
11
Distance north or south of equator
Down
1
Total number of people in an area
2
Low-lying land surrounded by higher ground
3
Land surrounded by water
4
Largest river in South America
5
Cold treeless Arctic plain
6
Piece of land jutting into the sea
10
Large natural stream of water