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The beneficial competition hypothesis in hail suppression holds that

  • A.adding embryos divides the water among more and smaller stones
  • B.seeding melts the hailstones before ever they land
  • C.seeding removes the updraught that supports the stones
  • D.seeding prevents any ice at all from forming anywhere in the storm

Answer: A

Correct answer: adding embryos divides the water among more and smaller stones

This is the beneficial competition hypothesis, and it is the only one of the four that is physically coherent. Seeding cannot melt stones, cannot remove an updraught, and certainly cannot prevent ice forming in a storm that is already producing hail.

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