Across
1
Wearing away of land by water or wind
3
Piece of land jutting into the sea
5
Imaginary line around the middle of Earth
6
Flat grassland in tropical regions
12
Narrow sea inlet between cliffs
13
Tool for finding directions
Down
2
Region surrounding the North Pole
4
Cold treeless Arctic plain
7
Total number of people in an area
8
Body of water surrounded by land
9
Region near the equator
10
Low-lying land surrounded by higher ground
11
Where river meets the sea