横向
1
Gas essential for breathing
3
Blocking of light by a celestial body
5
Fourth state of matter
7
Element found in all living things
9
Basic unit of life
10
Glass that splits light into spectrum
纵向
2
Group of similar cells
4
Force that attracts objects together
6
Amplified beam of light
8
Unit of electric potential
11
Tectonic landmass section
12
Tissue that contracts for movement