Across
1
Basic unit of life
4
Absolute temperature scale unit
5
Nerve cell in the brain
6
Fourth state of matter
10
Path of a planet around the sun
11
Naturally occurring inorganic solid
Down
1
Solid with repeating atomic pattern
2
Compound containing oxygen
3
Blocking of light by a celestial body
7
Preserved remains of ancient life
8
Tectonic landmass section
9
Particle of light