What aspect of an organism makes it an invasive species?

An invasive species is typically defined by its ability to rapidly spread and outcompete native species in a new environment. This can be due to factors such as high reproductive rates, lack of natural predators or diseases in the new environment, ability to adapt to various habitats and climates, and/or aggressiveness in competition for resources. Invasive species can disrupt ecosystems, harm native species, and cause economic and environmental damage.