sometimes alien species affect the indigenous organisms leading to their extinction substabtiate this statement with the help of any - Biology - Biodiversity and Conservation

Question

sometimes alien species affect the indigenous organisms leading
to their extinction substabtiate this statement with the help of
any two examples

Ritika Goyal · Accepted Answer

Indigenous species refers to the species which has been existed and
adapted to a particular kind of region since long time while an
alien species refers to the new kind of species invading that
particular kind of area interfering and disturbing the existence of
the indigenous species and its biodiversity If a new species
inhabits the same area as that of the existing one, it disturbs the
activities, food and ecology of that area Those two species then
compete for food and other resources present in that area Sometime
the alien species become more adaptive to that area as compared to
the indigenous species leading to the extinction of the
latter

For example, purple loosestrife is and ornamental plant, which when
released into waterways over grow quickly resulting in the choking
of the native plants and also interfere with the flow of lakes,
streams, rivers etc

Also, alien species like cane toad are intentionally introduced in
some areas to reduce the number of native species of that
area

sometimes alien species affect the indigenous organisms leading to their extinction. substabtiate this statement with the help of any two examples.