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For a species to be called invasive, it must 1. be introduced to a new area. 2. spread rapidly in this new area. 3. eliminat
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Answer #1

Correct option will be b

Invasive species are those which are foreign in nature, can quickly adopt new enviroment and then eliminate the local existing species from that area.

Allien species is difficult to eliminates as it's fast growth and better adaptation in new environment.

Eg water hyacinth introduced in India, Hydrila in Australia.

Hope it's clear .thanks

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