Suppressed correlative

Biological Parallel

The native/invasive species distinction encodes a real biological difference: species that co-evolved within an ecosystem face regulatory constraints that recently introduced species bypass entirely. Rabbits in Australia, brown tree snakes on Guam, and cane toads across northern Australia demonstrate the catastrophic consequences of introductions into unprepared ecosystems. Eucalyptus expanding over 35 million years is not equivalent. Suppressing this timescale distinction — arguing all species 'migrated from somewhere' — destroys the category's predictive power.