横向
1
Imaginary line around the middle of Earth
2
Steep rock face at edge of land
4
Region surrounding the North Pole
5
Land surrounded by water on three sides
6
Largest river in South America
7
Total number of people in an area
8
Where river meets the sea
9
Largest ocean on Earth
11
City that is seat of government
纵向
2
Long-term weather patterns of an area
3
One of seven major landmasses
4
Chain or group of islands
10
Land surrounded by water
12
Large slow-moving mass of ice