4. What is the role of plants within an ecosystem?Topic 5- what external factors affect organisms within their ecosystem? 
5. What external facotrs affect organisms within their ecosystem?Topic 6- Why do organisms compete? 
6. Why do organisms compete?Topic 7- How do organisms ensure they survive and compete well? 
7. How do organisms ensure they survive and compete well?Topic 8- How do organisms within an ecosystem depend upon each other? 
8. How do organisms within an ecosystem depend upon eachother?Topic 9- How are materials cycled within an ecosystem? 
9. How are materials cycled within ecosystem?Topic 10- Why is Biodiversity important? 
10. Why is biodiversity important?Topic 11- How are humans contributing to a loss in Biodiversity? 
11. How are humans contributing to a loss of biodiversity?Topic 12- How are humans working towards increasing Biodiversity? 
12. How are humans working towards increasing biodiversity?Topic 13- Why should we be careful with waste? 
13. Why should we be careful with waste?