横向
1
Imaginary line around the middle of Earth
5
Largest hot desert in the world
7
Region near the equator
8
Total number of people in an area
9
Low-lying land surrounded by higher ground
10
Wearing away of land by water or wind
纵向
2
Largest ocean on Earth
3
Tool for finding directions
4
Vast body of salt water
6
Large area covered with trees
11
Large natural elevation of earth
12
Goods brought in from another country