Across
1
Low-lying land surrounded by higher ground
4
Land surrounded by water on three sides
7
Region near the equator
8
Total number of people in an area
9
Large slow-moving mass of ice
11
Mountain that can erupt with lava
13
Low area between mountains
Down
2
Land surrounded by water
3
Raised area of land, smaller than a mountain
5
Line dividing two countries
6
Chain or group of islands
10
Goods sold to another country
12
Region surrounding the North Pole