Across
1
Low-lying land surrounded by higher ground
3
Goods sold to another country
4
Narrow sea inlet between cliffs
5
Imaginary line around the middle of Earth
8
Flat grassland in tropical regions
9
Seasonal heavy rainfall
12
Landform where river meets the sea
Down
2
Distance north or south of equator
6
Land surrounded by water
7
Area where water covers the soil
10
Height above sea level
11
Body of water surrounded by land