Across
1
Tectonic landmass section
3
Unit of force
5
Center of an atom or cell
7
Element found in all living things
11
Amplified beam of light
12
The Red Planet
13
Substance with pH above 7
Down
2
Push or pull on an object
4
Measure of matter in an object
6
Our home planet
8
Preserved remains of ancient life
9
Unit of heredity
10
Absolute temperature scale unit