Across
1
Compound containing oxygen
3
Curved glass that refracts light
6
Group of similar cells
8
Measure of matter in an object
10
Chemical element in table salt
12
Unit of heredity
14
Unit of electric potential
Down
2
Tectonic landmass section
4
Push or pull on an object
5
Infectious microscopic agent
7
Element found in all living things
9
Preserved remains of ancient life
11
Naturally occurring inorganic solid
13
Molten rock beneath Earth surface