Post a New Question

ecology

posted by on .

after spraying crops with ddt for several years, farmers found that populations of insect pests rebounded. one reason was that the insects had developed resistance to the insecticide. suggest populations, pyramids, predators and competitors

  • ecology - ,

    Sorry, but your question is not clear. What exactly do you need help on?

    Sra

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question