Across
1
Nerve cell in the brain
5
Tectonic landmass section
7
The Red Planet
9
Positive particle in nucleus
Down
2
Basic unit of life
3
Our home planet
4
Center of an atom or cell
6
Compound containing oxygen
8
Substance with pH below 7
Nerve cell in the brain
Tectonic landmass section
The Red Planet
Positive particle in nucleus
Basic unit of life
Our home planet
Center of an atom or cell
Compound containing oxygen
Substance with pH below 7