Final answer:
The lack of co-evolution between invasive species and native species disrupts the balance and interdependence in an ecosystem, leading to potential ecosystem collapse.
Step-by-step explanation:
The fact that invasive species did not co-evolve with the native species unbalances an ecosystem because the native species have developed a balance and interdependence with each other over time. When an invasive species is introduced, it can disrupt this balance by outcompeting native species for resources, predating on native species, or introducing new diseases or parasites. As a result, the native species may decline or even go extinct, leading to a loss of biodiversity and potential ecosystem collapse.
Learn more about Impact of invasive species on ecosystems