横向
1
Physical features of land
6
Half of the Earth
8
Low-lying land surrounded by higher ground
10
Landform where river meets the sea
纵向
2
Distance north or south of equator
3
Largest hot desert in the world
4
Ocean between Americas and Europe/Africa
5
Flat grassland in tropical regions
7
Wearing away of land by water or wind
9
Dry land with little rainfall
11
Area where water covers the soil