Across
1
Largest ocean on Earth
5
Area where water covers the soil
6
Large natural stream of water
7
Large slow-moving mass of ice
8
Large area covered with trees
9
Mountain that can erupt with lava
10
Seasonal heavy rainfall
Down
2
Steep rock face at edge of land
3
Region surrounding the North Pole
4
Flat grassland in tropical regions
9
Low area between mountains
11
Vast body of salt water
12
Goods sold to another country
13
Region between the two tropic lines