Across
1
Unit of force
3
Infectious microscopic agent
4
Unit of heredity
7
Positive particle in nucleus
9
Biological catalyst
10
Tissue that contracts for movement
Down
2
Naturally occurring inorganic solid
3
Gas form of a liquid
5
Disturbance that transfers energy
6
Compound containing oxygen
8
Push or pull on an object
11
Unit of energy
12
The Red Planet
13
Center of an atom or cell