Across
1
Largest ocean on Earth
4
Low area between mountains
6
Land surrounded by water on three sides
7
Vast body of salt water
8
Total number of people in an area
10
Dry land with little rainfall
11
Mountain that can erupt with lava
Down
2
Narrow sea inlet between cliffs
3
Chain or group of islands
5
Region near the equator
9
Flat grassland in tropical regions