横向
1
Where river meets the sea
5
Land surrounded by water
6
Steep rock face at edge of land
7
Region surrounding the North Pole
9
Mountain that can erupt with lava
10
Largest hot desert in the world
11
Ocean between Americas and Europe/Africa
纵向
2
Chain or group of islands
3
Cold treeless Arctic plain
4
Large area covered with trees
8
Flat elevated area of land
12
Area where water covers the soil