横向
1
Positive particle in nucleus
3
Second lightest element
7
Tectonic landmass section
8
Icy body with a tail near the sun
9
Disturbance that transfers energy
11
Unit of heredity
纵向
2
The Red Planet
4
Fourth state of matter
5
Mass per unit volume
6
Naturally occurring inorganic solid
10
Gas essential for breathing