Across
1
Compound containing oxygen
4
Curved glass that refracts light
5
Tissue that contracts for movement
8
Unit of power
9
Infectious microscopic agent
11
Gas essential for breathing
Down
2
Tectonic landmass section
3
Glass that splits light into spectrum
6
The Red Planet
7
Reddish electrical conductor
9
Hottest planet in solar system
10
Biological catalyst
12
Precious yellow metallic element