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As a soil becomes strongly acidic, the balance of the microbial community shifts towards

  • A.Cyanobacteria
  • B.Fungi
  • C.Nitrifying bacteria
  • D.Actinomycetes

Answer: B

Fungi tolerate low pH much better than most bacteria, so they take over decomposition in acid soils. Actinomycetes are among the least acid-tolerant groups and nitrifiers slow markedly, which is why acid soils accumulate undecomposed organic matter.

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