Final answer:
Invasive species are non-native species that disrupt the balance of ecosystems by outcompeting native organisms for resources, leading to a less stable ecosystem.
Step-by-step explanation:
Invasive species are non-native species that are introduced into a new habitat and have negative impacts on the ecosystem. They can disrupt the balance of the ecosystem because they often have no natural predators and can outcompete native organisms for resources. This leads to a less stable ecosystem because the invasive species can cause a decline in the populations of native organisms, leading to a loss of biodiversity and potentially disrupting the food chain.
Learn more about Invasive species and their impact on ecosystems