Answer:
invasive species
Step-by-step explanation:
When an exotic species proliferates wildly and becomes a potential threat to other species and the ecosystem, we call these species invasive. An example of this is cane toad that has proliferated uncontrollably as it has almost no predators.
An invasive species is characterized by reproducing rapidly, having good dispersibility and being resistant to environmental changes, coping well in a diversity of environment and with environmental stress. We may have invasive species that are natural in the country, but from a different biome than the one they are invading.