How does the introduction of exotic species affect the invaded land?

How does the introduction of exotic species affect the invaded land?
  1. It causes harm to the native species
  2. It increases species diversity
  3. It becomes stable and does not spread rapidly
  4. It starts spreading rapidly

Solution

When certain exotic species are introduced into a geographical area, they become invasive and start spreading fast. This happens because the invaded land does not have its natural predators. The exotic species can cause havoc to the ecosystem by spreading rapidly into millions of hectares of land, as demonstrated by the prickly pear cactus introduced into Australia in the early 1920’s.

Asked in: NCERT

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