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Assertion (A): Inadvertent modification may exceed deliberate modification in magnitude.
Reason (R): Industrial and transport aerosol acts continuously over vast areas.

  • 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

Correct answer: Both A and R are true, and R is the correct explanation of A

Both are true and the reason gives the mechanism. Deliberate seeding treats particular clouds for a few hours; industrial and transport aerosol is emitted continuously over whole continents and alters the droplet population of clouds everywhere. The unintended effect is therefore very much the larger, though it was never designed.

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