Across
1
Half of the Earth
4
Total number of people in an area
5
Body of water surrounded by land
8
Piece of land jutting into the sea
9
Region surrounding the North Pole
10
Large area covered with trees
Down
2
Where river meets the sea
3
Seasonal heavy rainfall
6
Wearing away of land by water or wind
7
Flat grassland in tropical regions
11
Vast body of salt water
12
Ridge of rock or coral near the surface