Practice question

**Ozone absorbs UV** protecting life, depletion by CFCs, halons produces Cl· + O₃ → ClO + O₂, ClO + O → Cl· + O₂, catalytic cycle, one Cl destroys thousands of O₃, Montreal Protocol bans CFCs, UV increase harmful. The ozone layer absorbs most of the sun’s harmful UV radiation; its depletion allows more UV rays to reach the Earth, increasing risks of skin cancer and other health issues. Using c = fλ, E₀/B₀ = c, I_d = ε₀ dΦ_E/dt, and spectrum classification λ = c/f, evaluation yields It increases UV radiation exposure, illustrating EM wave transverse nature and Maxwell's displacement current concept.