Question

Alien species invasion happens when ________.

• A. A species from an ecosystem gets introduced into another ecosystem
• B. An ecosystem changes and becomes hostile to live in
• C. A species gets alienated in its own ecosytem and cannot survive anymore
• D. None of the above

Answer 1

The correct option is A

A species from an ecosystem gets introduced into another ecosystem

Sometimes due to human intervention, a species from a different ecosystem is introduced into an already established and flourishing ecosystem. These alien species tend to grow in size unchecked, since they do not become part of the food chain. This can have catastrophic effects on the ecosystem and can even destroy the biological diversity. This phenomenon is called alien species invasion.