Across
1
Group of similar cells
2
Element found in all living things
6
Measure of matter in an object
8
Curved glass that refracts light
9
Fourth state of matter
10
Preserved remains of ancient life
Down
2
Basic unit of life
3
Glass that splits light into spectrum
4
Icy body with a tail near the sun
5
Tissue that contracts for movement
6
Molten rock beneath Earth surface
7
Amplified beam of light