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Cloud seeding to increase precipitation usually aims to

  • A.make the cloud itself considerably deeper
  • B.add ice nuclei to a supercooled cloud
  • C.add condensation nuclei to a glaciated cloud
  • D.warm the cloud so that it rains sooner

Answer: B

Glaciogenic seeding provides nuclei where the cloud has too few of its own. Hygroscopic seeding of warm clouds with large salt particles is a separate and less common approach. Each targets a different stage of the precipitation process.

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