横向
1
One of seven major landmasses
4
Largest ocean on Earth
5
Goods sold to another country
7
Landform where river meets the sea
8
Low-lying land surrounded by higher ground
10
Deep narrow valley with steep sides
11
Region surrounding the North Pole
12
Mountain that can erupt with lava
纵向
1
Tool for finding directions
2
Height above sea level
3
Large natural elevation of earth
4
Flat elevated area of land
6
Total number of people in an area
9
Where river meets the sea