Across
1
Deep narrow valley with steep sides
4
Ridge of rock or coral near the surface
5
Dry land with little rainfall
6
Flat elevated area of land
8
Largest river in South America
10
Cold treeless Arctic plain
11
Long-term weather patterns of an area
12
Tool for finding directions
Down
1
Piece of land jutting into the sea
2
Landform where river meets the sea
3
Land surrounded by water
7
Where river meets the sea
9
Distance north or south of equator