Across
1
Infectious microscopic agent
3
Unit of heredity
4
Unit of force
7
Fourth state of matter
8
Magnetic metallic element
10
Molten rock beneath Earth surface
Down
2
Positive particle in nucleus
3
Force that attracts objects together
5
Naturally occurring inorganic solid
6
Compound containing oxygen
7
Glass that splits light into spectrum
9
Tissue that contracts for movement
11
Group of similar cells