1. Core k:ecology Din aikjowardi

3. Explain the terms producer,consumer and tropic level, and state examples of these in specific food chains and food webs;

4. Describe how energy is transferred through food chains food webs;

5. Explain how energy is transferred through food chains and understand what is meant by effiency of transfer;

8. The niche of an Owl is to maintain the population of Shrews and as prey to other organisms. The niche of Oak leaves are to produce carbohydrates for food for other organisms. The niche of a caterpillar is to maintain the population of Oak leaves and to provide food for other organisms as prey. The niche of a Shrew is to maintain the population of Caterpillars and as prey for other organisms. vs

9. Carnivore glucose Omnivore Herbivore photosynthesis Carbon dioxide(co₂) oxygen Primary consumer Secondary consumer producer Tertiary consumer sun Water(h₂0)

11. Most ray are not used in photosynthesis Respiration To Decomposers

12. Dinitrogen in air Nitrogen fixation by rhizobium denitrification ammonium nitrite nitrate Oxidation by nitrosomonas Oxidation by nitrobacter Absorbed by plant Death and decay Nitrogen containing molecule In organism