横向
1
Area where water covers the soil
5
Largest hot desert in the world
6
Region near the equator
9
Physical features of land
10
Distance east or west of prime meridian
11
Total number of people in an area
13
Land surrounded by water
纵向
2
Flat grassland in tropical regions
3
Vast body of salt water
4
Dry land with little rainfall
7
Land surrounded by water on three sides
8
Largest ocean on Earth
12
City that is seat of government