Across
1
Compound containing oxygen
4
Amplified beam of light
5
Curved glass that refracts light
6
Mass per unit volume
Down
2
Group of similar cells
3
Tissue that contracts for movement
7
Unit of heredity
8
Unit of energy
9
Unit of power
Compound containing oxygen
Amplified beam of light
Curved glass that refracts light
Mass per unit volume
Group of similar cells
Tissue that contracts for movement
Unit of heredity
Unit of energy
Unit of power