The scientific term for a non-native species that spreads rapidly is invasive species. Invasive species can disrupt local ecosystems, outcompeting native species for resources, altering habitats, and introducing diseases. These species often thrive in their new environments due to a lack of natural predators and can have ecological and economic impacts. Managing invasive species requires concerted efforts, including monitoring, removal, and public education to mitigate their effects on local biodiversity and ecosystem balance.