Biological Control

• What is a pest?

  An organism that eats a crop plant
• What is a native species?

  An organism that lives in the country
• What is an alien species?

  An organism introduced into a country in which it doesn't usually live
• What is an invasive species?

  An alien organism that has had a negative effect on the native species
• What is biological control?

  The use of one organism to control the population size of another species by eating it