Across
1
Where river meets the sea
5
Region between the two tropic lines
6
Vast body of salt water
7
Height above sea level
8
Region near the equator
11
Imaginary line around the middle of Earth
12
Large natural elevation of earth
Down
1
Wearing away of land by water or wind
2
Largest river in South America
3
Cold treeless Arctic plain
4
Tool for finding directions
9
Ridge of rock or coral near the surface
10
Line dividing two countries