横向
1
Deep narrow valley with steep sides
5
Total number of people in an area
6
Region surrounding the North Pole
7
Mountain that can erupt with lava
8
Raised area of land, smaller than a mountain
9
Body of water surrounded by land
10
Where river meets the sea
11
Largest hot desert in the world
纵向
2
Vast body of salt water
3
Ocean between Americas and Europe/Africa
4
Land surrounded by water on three sides
12
Large area covered with trees