Across
1
Amplified beam of light
4
Gas form of a liquid
5
Chemical element in table salt
6
Gas essential for breathing
Down
2
Absolute temperature scale unit
3
Group of similar cells
4
Infectious microscopic agent
7
Icy body with a tail near the sun
Amplified beam of light
Gas form of a liquid
Chemical element in table salt
Gas essential for breathing
Absolute temperature scale unit
Group of similar cells
Infectious microscopic agent
Icy body with a tail near the sun