Getting Hooked on Ecojars

Applying Your Knowledge

1. a) What is an ecosystem?
   
   b) What are the two main parts of an ecosystem?
   
2. The ecosystem your group built is a closed ecosystem.
   How does it differ from natural ecosystems?
   
3. Why was a closed ecosystem used for this activity?
   
4. The plants and algae require carbon dioxide for photosynthesis.
   Where did the carbon dioxide come from?
   
5. The plants, animals and algae require oxygen for respiration.
   Where did the oxygen come from?
   
6. How do the plants get the nutrients they need for survival?
   
7. What would cause a high level of ammonia in the ecojar?
   
8. What is the purpose of the light?
   
9. What do you think will happen if all the plants and algae die?