Across
1
Infectious microscopic agent
4
Element found in all living things
5
Preserved remains of ancient life
7
Molten rock beneath Earth surface
8
Blocking of light by a celestial body
9
Unit of heredity
10
Magnetic metallic element
11
Disturbance that transfers energy
Down
2
Naturally occurring inorganic solid
3
Glass that splits light into spectrum
6
Unit of force
12
Ball of burning gas in space