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Match each factor with its usual effect on precipitation efficiency.
List I
A. Dry sub-cloud layer
B. High droplet concentration
C. Great cloud depth
D. Weak entrainment
List II
1. raises it by lengthening the growth path
2. lowers it through evaporation
3. raises it by preserving condensate
4. lowers it by delaying collection

  • A.A-4, B-2, C-1, D-3
  • B.A-2, B-4, C-3, D-1
  • C.A-3, B-1, C-4, D-2
  • D.A-2, B-4, C-1, D-3

Answer: D

Efficiency is the net outcome of several competing influences rather than a property of the cloud alone. The environment surrounding the cloud matters as much as its own microphysics. Efficiency is a property of the cloud and its surroundings together.

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