横向
1
Physical features of land
5
Large area covered with trees
7
Distance north or south of equator
8
Largest hot desert in the world
10
Deep narrow valley with steep sides
13
Region between the two tropic lines
纵向
2
Mountain that can erupt with lava
3
Where river meets the sea
4
Ridge of rock or coral near the surface
6
Ocean between Americas and Europe/Africa
8
Flat grassland in tropical regions
9
Total number of people in an area
11
Wearing away of land by water or wind
12
Tool for finding directions