What are invasive species? #upsc #ias

  • An invasive species is a non native organism that causes ecological harm after being introduced to a new environment.
  • Humans are responsible for the spread of a majority of earth’s invasive species, often carrying them to different parts of the world on ships.
  • Once they enter a new ecosystem, invasive species can outcompete native organisms for resources like food, especially if they lack natural predators.
  • Some invasive species also carry diseases that kill native organisms, and many will consume native plants and animals.
  • Invasive species can ultimately cause the decline or extinction of native species, decreasing biodiversity in an ecosystem.