The chemical formula for ozone, a molecule composed of three oxygen atoms, is _____.
- O2
- O3
- CO2
- H2O
Answer: O3
Ozone (O3) in the stratosphere protects from UV radiation, but at ground level it is a harmful pollutant and greenhouse gas.
Answer: O3
Ozone (O3) in the stratosphere protects from UV radiation, but at ground level it is a harmful pollutant and greenhouse gas.