How do invasive species spread? Identify three methods.

1-no predators, so uncontrolled population growth

2-is a predator that is stronger than the apex predator of the area, or is in a predator free environment so has little to no problem spreading

3-is a toxic animal that breeds quickly, so when eaten can kill what ate it, there for ruining the ecosystem as the predators die from the toxic prey they eat. which can lead to method 1 if not dealt with.