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Biological control is to check growth of

  • A.Plants
  • B.Animals
  • C.Weeds
  • D.One pest by another

Answer: D

Biological control means checking one pest by another organism.

A natural enemy - a predator, parasite or pathogen - is introduced against the pest. The ladybird beetle against aphids and Bacillus thuringiensis against caterpillars are examples; it avoids the residues and resistance that chemicals bring.

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