横向
1
Tectonic landmass section
5
Unit of force
6
Group of similar cells
8
Our home planet
9
Biological catalyst
13
Solid with repeating atomic pattern
纵向
2
Blocking of light by a celestial body
3
Ball of burning gas in space
4
Unit of heredity
7
Natural satellite of Earth
10
Path of a planet around the sun
11
Gas form of a liquid
12
Substance with pH below 7