Across
1
Center of an atom or cell
4
Push or pull on an object
6
Tectonic landmass section
9
The Red Planet
11
Unit of energy
13
Gas essential for breathing
Down
2
Basic unit of life
3
Reddish electrical conductor
5
Biological catalyst
6
Fourth state of matter
7
Unit of heredity
8
Unit of electric potential
10
Infectious microscopic agent
12
Magnetic metallic element