LIFE SCIENCE

Detailed explanation-1: -To be invasive, a species must adapt to the new area easily. It must reproduce quickly. It must harm property, the economy, or the native plants and animals of the region. Many invasive species are introduced into a new region accidentally.

Detailed explanation-2: -There are examples of invasive species altering the evolutionary pathway of native species by competitive exclusion, niche displacement, hybridization, introgression, predation, and ultimately extinction.

Detailed explanation-3: -Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources and altering habitats.

Detailed explanation-4: -Nearly all biological invasions begin as accidental introductions with trade and travel, or as intentional introductions that spread outside their intended use. The fraction of invaders that were intentionally versus accidentally released varies greatly by taxonomic group.

Detailed explanation-5: -An alien or non-native species is one that has been intentionally or accidentally transported and released into an environment outside of its historic or resident geographical range or habitat. Such species are described as ‘invasive’ if they are ecologically and/or economically harmful.