横向
1
Region between the two tropic lines
5
Total number of people in an area
7
Largest river in South America
8
Steep rock face at edge of land
10
Distance east or west of prime meridian
纵向
2
Large area covered with trees
3
Region near the equator
4
Half of the Earth
6
Large natural elevation of earth
8
Tool for finding directions
9
Raised area of land, smaller than a mountain
11
Low area between mountains
12
Wearing away of land by water or wind
13
Where river meets the sea