Across
1
Low-lying land surrounded by higher ground
3
Raised area of land, smaller than a mountain
4
Landform where river meets the sea
5
Where river meets the sea
7
Region surrounding the North Pole
9
Goods brought in from another country
Down
2
Area where water covers the soil
3
Half of the Earth
6
Large natural stream of water
8
City that is seat of government