Across
1
Vast body of salt water
3
Piece of land jutting into the sea
4
Ridge of rock or coral near the surface
5
Line dividing two countries
8
Seasonal heavy rainfall
9
Region near the equator
10
Where river meets the sea
Down
2
Half of the Earth
6
Deep narrow valley with steep sides
7
Flat grassland in tropical regions
11
Total number of people in an area
12
Flat elevated area of land