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Geoengineering by injecting stratospheric aerosol would

  • A.remove the carbon dioxide from the atmosphere
  • B.eliminate any need at all for adaptation
  • C.have no effect on the radiation balance
  • D.reduce sunlight without addressing the cause

Answer: D

Correct answer: reduce sunlight without addressing the cause

Stratospheric aerosol injection would mimic a large volcanic eruption, scattering some sunlight back to space and cooling the surface. It leaves the carbon dioxide concentration exactly where it was, so it treats the symptom rather than the cause - with all the consequences the next item lists.

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