横向
1
Wearing away of land by water or wind
4
Tool for finding directions
7
Line dividing two countries
8
One of seven major landmasses
9
Flat elevated area of land
10
Physical features of land
11
Large slow-moving mass of ice
纵向
2
Total number of people in an area
3
Steep rock face at edge of land
4
Long-term weather patterns of an area
5
Mountain that can erupt with lava
6
Height above sea level
12
Goods sold to another country
13
Large area covered with trees