1. A2 course

2. Lesson 1

3. Lesson 2

4. Lesson 3

5. Lesson 4

6. Lesson 5

7. Lesson 6

8. Lesson 7

9. Lesson 1 E – Know and construct the different methods of energy transfer in an ecosystem C – Explain transfer between different levels A - Quantitatively compare different ecosystems and trophic level

10. Write down everything you know on energy transfers…….

11. Plants are PRODUCERS and everything else consumes they energy that they produce making them CONSUMERS. Food chains and webs are separated out into TROPHIC LEVELS.

12. a)b) c)

13. Usually a maximum of 10% is passed from one trophic level to another. Decomposers are placed on the primary consumer level even though they take their nutrition from several trophic levels.

14. Puzzler