Across
1
Area where water covers the soil
3
Large body of water partly enclosed by land
5
Land surrounded by water
8
Region between the two tropic lines
9
Low-lying land surrounded by higher ground
10
Wearing away of land by water or wind
Down
2
Largest ocean on Earth
4
Cold treeless Arctic plain
6
One of seven major landmasses
7
Total number of people in an area