Exposure to _________________ accelerates the degradation of plastics?
Correct answer: A. Ultraviolet radiation
- A. Ultraviolet radiation
- B. High atmospheric temperature
- C. High ambient temperature
- D. Damp atmosphere
Explanation
Ultraviolet radiation supplies enough energy to break polymer bonds and initiate photo-oxidation, causing plastics to become brittle and discoloured. Heat and moisture may also accelerate some degradation, but ultraviolet exposure is the standard answer for outdoor plastic deterioration.
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