Across
1
Amplified beam of light
3
Particle of light
4
Preserved remains of ancient life
5
Unit of power
6
Substance with pH above 7
Down
2
Basic unit of life
3
Tectonic landmass section
7
Icy body with a tail near the sun
Amplified beam of light
Particle of light
Preserved remains of ancient life
Unit of power
Substance with pH above 7
Basic unit of life
Tectonic landmass section
Icy body with a tail near the sun