Across
1
Measure of matter in an object
4
Nerve cell in the brain
6
Basic unit of life
7
Mass per unit volume
8
Naturally occurring inorganic solid
10
Infectious microscopic agent
11
Unit of heredity
12
Molten rock beneath Earth surface
Down
2
Fourth state of matter
3
Group of similar cells
4
Unit of force
5
Chemical element in table salt
9
Our home planet