Analyze a real invasive-species case study to explain how a new organism can disrupt existing food web relationships.
Every ecosystem food web develops over a long time, with organisms adapted to their local producers, consumers, and decomposers. When a new species arrives from somewhere else, an invasive species, it can disrupt that balance, especially if it has no natural predators in its new home or if it out-competes native organisms for food and space.
One well-known case is an invasive species that arrives without the predators that normally control it back home. Freed from those checks, its population can grow quickly, crowd out native producers or consumers, and change the whole food web. Studying real cases like this helps scientists predict and manage the impact of new arrivals.
Mastery looks like: They can explain, using a real case, how an invasive species disrupts food web relationships and why it can spread unchecked.
Common stumbles: Assuming every new or unfamiliar species is automatically invasive or harmful; missing the no-natural-predator reason for unchecked growth.