Across
1
Biological catalyst
4
Tectonic landmass section
5
Positive particle in nucleus
6
Element found in all living things
8
Glass that splits light into spectrum
Down
2
Group of similar cells
3
Push or pull on an object
7
The Red Planet
9
Magnetic metallic element
10
Unit of heredity
11
Nerve cell in the brain
12
Unit of electric potential