Across
1
Gas essential for breathing
4
Tectonic landmass section
6
Nerve cell in the brain
7
Chemical element in table salt
Down
2
Unit of electric potential
3
Hottest planet in solar system
5
Biological catalyst
8
Gas form of a liquid
Gas essential for breathing
Tectonic landmass section
Nerve cell in the brain
Chemical element in table salt
Unit of electric potential
Hottest planet in solar system
Biological catalyst
Gas form of a liquid