Ecosystem Changes: Biodiversity Threats

Discover threats to ecosystem biodiversity with this life-science worksheet! Students at the sixth- through eighth-grade levels will uncover four major threats to biodiversity: habitat loss, invasive species, pollution, and overexploitation. Students match each threat to their effects on the ecosystem. Then, students consider how the effects are similar and different through two questions. 

This worksheet provides a concise overview of life science vocabulary and encourages critical thinking. The knowledge in this worksheet fits in a middle school ecosystems unit, bridging concepts from food webs to human impact and conservation. 

Ready to keep learning about ecosystems? Check out Ecosystem Changes: Drought to engage with a different kind of ecosystem threat. To learn about specific biotic adaptations to ecosystem threats, try exploring Adaptations to Wildfires.