Across
1
Cold treeless Arctic plain
5
Imaginary line around the middle of Earth
8
Large natural elevation of earth
10
Mountain that can erupt with lava
11
Goods sold to another country
Down
2
One of seven major landmasses
3
Where river meets the sea
4
Physical features of land
6
Large natural stream of water
7
Low area between mountains
9
Narrow sea inlet between cliffs