Protecting Biodiversity from Invasives

Analyze how ecosystems respond when non-native species, emerging pathogens, or expanding pests become established in a region. Explain the ecological conditions that make invasion or spread more likely, the kinds of damage they can cause, and the trade-offs involved in monitoring, containment, and adaptation. Then propose a practical strategy for cities, farms, and public-health agencies to reduce long-term risk without trying to eliminate every new arrival.