Across
1
Tissue that contracts for movement
2
Precious yellow metallic element
4
Nerve cell in the brain
6
Naturally occurring inorganic solid
Down
2
Unit of heredity
3
Fourth state of matter
5
Measure of matter in an object
7
Compound containing oxygen
8
Second lightest element
9
Magnetic metallic element
10
Icy body with a tail near the sun