Across
1
Body of water surrounded by land
4
Physical features of land
5
Landform where river meets the sea
7
Wearing away of land by water or wind
9
Flat elevated area of land
10
Vast body of salt water
11
City that is seat of government
12
Cold treeless Arctic plain
Down
2
Line dividing two countries
3
Low-lying land surrounded by higher ground
6
Dry land with little rainfall
8
Height above sea level
9
Total number of people in an area
13
Largest ocean on Earth