横向
1
Distance north or south of equator
6
Height above sea level
7
Mountain that can erupt with lava
10
Vast body of salt water
纵向
2
Dry land with little rainfall
3
Line dividing two countries
4
Largest river in South America
5
Distance east or west of prime meridian
8
Total number of people in an area
9
Large natural elevation of earth
11
Goods sold to another country
12
Large area covered with trees