LEARN · PRACTISE · DISCOVER
People, Ecosystems, and Conservation Project
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THE CURIOSI · EXPLORE & TRY
Observe → check → plan → review
Explore the model, then test your understanding. Select each numbered stop to discover its role.
1Observe
Record living parts, nonliving conditions and human activity without disturbing the place.
2Check evidence
Separate what you saw from what you infer. Check food relationships with a reliable reference.
3Plan safely
Choose an adult-approved local action and ask how it might help.
4Review
Decide what evidence would show whether the action helped; revise your idea if needed.
Simplified model: real ecosystems have more connections. Food-chain arrows show energy moving from food to eater; nutrient-cycle arrows describe material transfer.
Quick check · 3 questions
Choose one answer for each question, then check. Practice results stay on this page and do not change course completion.
Read the answer explanations
- An observation reports something directly noticed. Explanations and predictions need evidence.
- Use permission, appropriate equipment and local guidance. Do not relocate organisms.
- A useful plan is specific, realistic and open to checking and improvement.
Explore further: NOAA: aquatic food webs.