横向
1
Chain or group of islands
8
Where river meets the sea
9
Physical features of land
10
Low-lying land surrounded by higher ground
纵向
2
Total number of people in an area
3
Line dividing two countries
4
Large area covered with trees
5
Long-term weather patterns of an area
6
Region surrounding the North Pole
7
Landform where river meets the sea
11
Half of the Earth