横向
1
Nerve cell in the brain
3
Tectonic landmass section
5
The Red Planet
8
Measure of matter in an object
9
Tissue that contracts for movement
10
Preserved remains of ancient life
11
Substance with pH above 7
纵向
2
Our home planet
4
Ball of burning gas in space
6
Blocking of light by a celestial body
7
Path of a planet around the sun
12
Substance with pH below 7
13
Amplified beam of light
14
Unit of heredity