Across
1
Goods sold to another country
4
Mountain that can erupt with lava
7
Large slow-moving mass of ice
8
Largest ocean on Earth
11
Total number of people in an area
Down
2
Narrow sea inlet between cliffs
3
Cold treeless Arctic plain
5
Distance north or south of equator
6
Vast body of salt water
9
Deep narrow valley with steep sides
10
Seasonal heavy rainfall
12
Ridge of rock or coral near the surface
13
Imaginary line around the middle of Earth