Across
1
Low-lying land surrounded by higher ground
4
Piece of land jutting into the sea
5
Flat elevated area of land
6
Large natural stream of water
8
Ridge of rock or coral near the surface
11
Vast body of salt water
Down
2
City that is seat of government
3
Half of the Earth
7
Total number of people in an area
9
Wearing away of land by water or wind
10
Height above sea level