Symbiotic Friends Open Response

This passage explores how worms interact with other species in their environments. It introduces mutualism, such as worms improving soil quality for plants, and commensalism, where tiny insects benefit from worm tunnels. It also describes parasitism, where harmful worms feed on other animals. The passage concludes by emphasizing how worms’ relationships-helpful or harmful-play essential roles in maintaining ecosystem balance and nutrient cycles.

Students strengthen categorization and comparison skills by distinguishing between mutualism, commensalism, and parasitism. The passage builds science-related vocabulary and encourages critical thinking about interdependence in ecosystems. Readers also practice reading for detail and concept grouping, developing a deeper understanding of how species coexist and affect one another.