横向
1
Path of a planet around the sun
3
Biological catalyst
4
The Red Planet
6
Positive particle in nucleus
8
Mass per unit volume
9
Chemical element in table salt
10
Unit of heredity
纵向
1
Gas essential for breathing
2
Second lightest element
5
Glass that splits light into spectrum
7
Solid with repeating atomic pattern
11
Nerve cell in the brain