横向
1
Where river meets the sea
5
Low-lying land surrounded by higher ground
6
Flat grassland in tropical regions
8
Mountain that can erupt with lava
9
Total number of people in an area
10
Half of the Earth
11
Long-term weather patterns of an area
纵向
2
Height above sea level
3
Tool for finding directions
4
Region near the equator
7
Low area between mountains
12
Body of water surrounded by land
13
Largest river in South America
14
Largest ocean on Earth