Pests can be controlled without the subsequent danger of polluting the ecosystem by

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Biology WAEC 1989

Pests can be controlled without the subsequent danger of polluting the ecosystem by

  • introducing a population of species similar to that of the pest
  • increasing the population of the natural enemies of the pest checkmark
  • eliminating the natural enemies of the pest
  • keeping the population of natural enemies of the pest constant
  • spraying the ecosystem with pesticide

The correct answer is: B

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