横向
1
Where river meets the sea
4
Cold treeless Arctic plain
6
Distance north or south of equator
8
Large area covered with trees
10
Physical features of land
11
Dry land with little rainfall
12
Large slow-moving mass of ice
纵向
2
Seasonal heavy rainfall
3
Largest river in South America
5
Landform where river meets the sea
7
Largest hot desert in the world
9
Piece of land jutting into the sea