Across
1
Vast body of salt water
4
Low area between mountains
6
Region between the two tropic lines
7
Landform where river meets the sea
8
Large natural stream of water
Down
2
Ridge of rock or coral near the surface
3
Largest river in South America
5
Line dividing two countries
6
Cold treeless Arctic plain
9
Tool for finding directions
10
Piece of land jutting into the sea