横向
1
Largest river in South America
5
Total number of people in an area
8
Dry land with little rainfall
9
Imaginary line around the middle of Earth
10
Seasonal heavy rainfall
11
Distance north or south of equator
纵向
2
Region near the equator
3
Piece of land jutting into the sea
4
Physical features of land
6
Line dividing two countries
7
Flat grassland in tropical regions