横向
1
Total number of people in an area
7
Low area between mountains
8
Physical features of land
10
City that is seat of government
11
One of seven major landmasses
纵向
2
Body of water surrounded by land
3
Large slow-moving mass of ice
4
Largest hot desert in the world
5
Half of the Earth
6
Vast body of salt water
9
Largest ocean on Earth
12
Large area covered with trees