Across
1
Where river meets the sea
5
Low-lying land surrounded by higher ground
7
Goods sold to another country
8
Region between the two tropic lines
9
Landform where river meets the sea
10
Chain or group of islands
11
Large body of water partly enclosed by land
Down
2
Total number of people in an area
3
Line dividing two countries
4
Area where water covers the soil
6
Height above sea level