Across
1
Curved glass that refracts light
4
Unit of force
5
Second lightest element
Down
2
Center of an atom or cell
3
Substance with pH above 7
6
Basic unit of life
7
Tectonic landmass section
8
Nerve cell in the brain
Curved glass that refracts light
Unit of force
Second lightest element
Center of an atom or cell
Substance with pH above 7
Basic unit of life
Tectonic landmass section
Nerve cell in the brain