横向
1
Where river meets the sea
3
Steep rock face at edge of land
5
Total number of people in an area
7
Height above sea level
10
Distance north or south of equator
11
Line dividing two countries
纵向
2
Low area between mountains
4
Largest ocean on Earth
6
Piece of land jutting into the sea
8
Ridge of rock or coral near the surface
9
Imaginary line around the middle of Earth
12
Dry land with little rainfall
13
Large area covered with trees
14
Largest river in South America