Across
1
Large natural elevation of earth
5
Ocean between Americas and Europe/Africa
6
Region near the equator
7
Large natural stream of water
9
Piece of land jutting into the sea
12
Cold treeless Arctic plain
13
Where river meets the sea
Down
2
Wearing away of land by water or wind
3
Region between the two tropic lines
4
Largest ocean on Earth
8
Line dividing two countries
10
Low area between mountains
11
Imaginary line around the middle of Earth