Across
1
Substance with pH below 7
3
Unit of heredity
5
Gas form of a liquid
6
Compound containing oxygen
8
Center of an atom or cell
Down
2
Element found in all living things
4
Mass per unit volume
7
Tissue that contracts for movement
Substance with pH below 7
Unit of heredity
Gas form of a liquid
Compound containing oxygen
Center of an atom or cell
Element found in all living things
Mass per unit volume
Tissue that contracts for movement