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Across 3. a living thing which died millions of years ago and was turned to stone 4. the first living thing in food chains 6. a gas found in air which you breath out 8. what plants grow in 11. liquid waste 13. a process used by plants to make food 16. one example of a decomposer 18. scientific word for eating 20. an element found in all living things 21. waste which some animals eat 22. something which is not wanted

Down 1. energy foods contain lots of this type of nutrient 2. solid waste 3. these contain energy for cars, cookers etc 5. tiny living things 6. the scientific word for burning 7. a process used by all living things to get energy 9. an animal which eats mostly meat 10. these living things break down waste 12. all animals in a food chain 14. an animal which eats only plants 15. this is formed when atoms of different elements are joined by chemical bonds 17. the smallest part of an element 19. another example of a decomposer