Across
1
Tissue that contracts for movement
2
Infectious microscopic agent
4
Natural satellite of Earth
6
Path of a planet around the sun
7
Basic unit of life
11
Magnetic metallic element
12
Group of similar cells
Down
2
Unit of electric potential
3
Chemical element in table salt
5
Nerve cell in the brain
8
Absolute temperature scale unit
9
Center of an atom or cell
10
Element found in all living things