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Assertion (A): Marine cloud brightening would have to be sustained continuously to have any effect.
Reason (R): Sea salt aerosol is removed from the atmosphere within days of release.

  • A.Both A and R are true, and R is the correct explanation of A
  • B.Both A and R are true, but R is not the correct explanation of A
  • C.A is true but R is false
  • D.A is false but R is true

Answer: A

Both are true and the reason gives the short residence time, and stopping would end the cooling almost at once. This termination behaviour is a central objection to such proposals. Termination shock is the standard term for the concern.

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