Across
1
Landform where river meets the sea
2
Low area between mountains
3
Large area covered with trees
5
Region surrounding the North Pole
7
Land surrounded by water on three sides
9
One of seven major landmasses
11
Body of water surrounded by land
12
Vast body of salt water
Down
2
Mountain that can erupt with lava
4
Goods sold to another country
6
Flat grassland in tropical regions
8
Raised area of land, smaller than a mountain
10
Large body of water partly enclosed by land
13
Large natural stream of water