Driving theory questions

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Which alternative is something that is dangerous close to the earth’s surface but good higher in the atmosphere?

  • Incorrect: Nitric oxide (NOx)
  • Incorrect: Hydrocarbons (HC)
  • Correct: Ozone
  • Incorrect: Carbon monoxide (CO)

The ozone found high up in the atmosphere protects us from harmful UV radiation. But down on earth, ozone is dangerous. A combination of nitric oxide and hydrocarbons contribute to the formation of ozone.” (Swedish Transport Administration)


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