Across
1
Where river meets the sea
5
Flat elevated area of land
6
Flat grassland in tropical regions
7
Total number of people in an area
8
Wearing away of land by water or wind
Down
2
Piece of land jutting into the sea
3
Land surrounded by water
4
Ocean between Americas and Europe/Africa
9
Distance north or south of equator
10
Deep narrow valley with steep sides
11
Seasonal heavy rainfall
12
Largest ocean on Earth