What is the effect of invasive species on native ecosystems?

The correct answer highlights that invasive species often disrupt ecosystems by outcompeting native species. Invasive species are typically non-native organisms that, when introduced to a new environment, can thrive and reproduce rapidly due to the absence of natural predators or competitors. This competitive edge allows them to take over resources such as food, light, and space, which diminishes the survival chances of native species that have evolved in specific ways to coexist with one another.

This disruption can lead to decreased biodiversity, as native species may become endangered or extinct due to the relentless competition. By fundamentally altering food webs and ecosystem dynamics, invasive species can change habitat structures, nutrient cycling, and the overall health of the ecosystem. Therefore, understanding the impacts of invasive species is crucial in conservation biology and ecosystem management, as their presence often leads to significant negative consequences for native organisms and ecological stability.