Elaborate how invasion by an alien species reduces the species diversity of an area.

(N/A) Alien species invasion is one of the major causes of biodiversity loss. When alien species are introduced intentionally or unintentionally into a new habitat,they often become invasive due to the absence of their natural predators or competitors in the new environment.
$1$. Competition for Resources: Invasive species often outcompete native species for limited resources such as food,water,space,and sunlight.
$2$. Predation: Alien species may act as predators to native species that have not evolved defense mechanisms against them,leading to a rapid decline in native populations.
$3$. Disruption of Ecosystem Processes: They can alter the physical environment,nutrient cycling,or fire regimes,making the habitat unsuitable for native species.
$4$. Example: The introduction of the Nile Perch into Lake Victoria in East Africa led to the extinction of more than $200$ species of native cichlid fish.