Across
- 2. structures built to control water flow that can flood ecosystems and prevent fish from reaching breeding sites
- 5. a community of living things and their nonliving environment interacting as a system
- 8. the variety of different species living in an ecosystem
- 9. something people add to air, water, or soil that harms living things
- 10. "An ______ species is a non-native organism that causes harm to the ecosystem."
- 15. at risk of disappearing from an area or becoming extinct
- 16. to catch animals for study or control; scientists may ______ and tag pythons to track them.
- 17. "When farmers clear plants on a prairie for crops, animals leave, ______ the ecosystem's food web."
- 18. a method of mining that uses huge machines to remove soil and rock to reach resources, disrupting ecosystems for a long time
- 19. anything people add to the environment that harms living things
Down
- 1. "Burmese ______ are an introduced species in the Everglades and can grow up to 6m long."
- 3. "These three organisms are all invasive ______ that have caused damage to ecosystems after they were introduced."
- 4. brought into a new area by people, either on purpose or by accident
- 6. to bring back to a former or healthy condition; to help recover an ecosystem
- 7. to plant or grow (as people plant trees or crops to change land use)
- 11. the natural home or place where an organism lives and gets food and shelter
- 12. many connected food chains showing how energy and matter flow among organisms create a food _____
- 13. (context clue) to bring back (used here as restore/recover) — create a clue asking students to find the word near coral reef restoration passages (note: look for restore/rekindle context)
- 14. natural materials (like trees, minerals, or water) used to make goods and provide energy
- 16. kept in human care or captivity