Across
1
Where river meets the sea
3
Long-term weather patterns of an area
4
Land surrounded by water on three sides
5
Raised area of land, smaller than a mountain
6
Flat grassland in tropical regions
7
Largest river in South America
Down
2
Deep narrow valley with steep sides
3
One of seven major landmasses
4
Flat elevated area of land
8
Largest hot desert in the world