横向
1
Half of the Earth
4
Mountain that can erupt with lava
6
Dry land with little rainfall
7
Vast body of salt water
10
Total number of people in an area
11
Ridge of rock or coral near the surface
12
Ocean between Americas and Europe/Africa
纵向
2
Visual representation of an area
3
Large area covered with trees
4
Low area between mountains
5
Land surrounded by water on three sides
8
Wearing away of land by water or wind
9
Physical features of land