横向
1
Physical features of land
5
Total number of people in an area
6
Ridge of rock or coral near the surface
7
Large natural stream of water
9
Low area between mountains
11
Landform where river meets the sea
12
Mountain that can erupt with lava
纵向
2
Height above sea level
3
Large slow-moving mass of ice
4
Wearing away of land by water or wind
8
Piece of land jutting into the sea
10
Largest ocean on Earth
13
Long-term weather patterns of an area