横向
1
Force that attracts objects together
5
Unit of heredity
7
Nerve cell in the brain
9
The Red Planet
纵向
2
Blocking of light by a celestial body
3
Molten rock beneath Earth surface
4
Biological catalyst
6
Tectonic landmass section
8
Mass per unit volume
10
Reddish electrical conductor
11
Absolute temperature scale unit