横向
1
Imaginary line around the middle of Earth
4
Largest ocean on Earth
5
Piece of land jutting into the sea
6
Height above sea level
7
Region near the equator
8
Mountain that can erupt with lava
10
Region surrounding the North Pole
11
Flat grassland in tropical regions
纵向
1
Where river meets the sea
2
Vast body of salt water
3
Total number of people in an area
9
One of seven major landmasses
11
Largest hot desert in the world
12
Land surrounded by water
13
Low-lying land surrounded by higher ground