Across
1
Raised area of land, smaller than a mountain
3
Flat grassland in tropical regions
4
Landform where river meets the sea
5
Piece of land jutting into the sea
8
Height above sea level
9
Goods brought in from another country
12
Largest river in South America
13
Large area covered with trees
Down
2
Chain or group of islands
6
Cold treeless Arctic plain
7
Area where water covers the soil
10
Deep narrow valley with steep sides
11
Large slow-moving mass of ice