Across
1
Body of water surrounded by land
4
Where river meets the sea
5
Steep rock face at edge of land
6
Largest river in South America
7
Large area covered with trees
8
Flat grassland in tropical regions
9
Line dividing two countries
10
Region surrounding the North Pole
11
Raised area of land, smaller than a mountain
Down
2
Large slow-moving mass of ice
3
Distance north or south of equator