Across
1
Natural satellite of Earth
4
Unit of heredity
5
Preserved remains of ancient life
6
Infectious microscopic agent
9
Biological catalyst
10
Unit of energy
11
Fourth state of matter
Down
2
Push or pull on an object
3
Absolute temperature scale unit
7
Gas form of a liquid
8
Hottest planet in solar system
12
Molten rock beneath Earth surface