Across
1
Wearing away of land by water or wind
4
Largest ocean on Earth
6
Where river meets the sea
7
Flat grassland in tropical regions
10
Vast body of salt water
11
Region surrounding the North Pole
13
Imaginary line around the middle of Earth
Down
2
Narrow sea inlet between cliffs
3
City that is seat of government
5
Region between the two tropic lines
8
Height above sea level
9
Ocean between Americas and Europe/Africa
12
Physical features of land