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Across 3. Can be used again and again. 5. Energy from water. 7. Japan imports this from Saudi Arabia. 8. ___________ energy: energy from underground heat. 13. A process of separating hydrogen and oxygen in water. 15. Can be trusted to work well. 16. __________ food. Popular, but unhealthy types of food. 20. ____________ energy: energy from ocean currents or tides. 21. A disease often connected with being overweight. 22. A gas that can be used to store energy.

Down 1. Not working all the time: stop and go. 2. Guidance for the best course of action. 4. Energy from wood or wood chips. 6. Describing the kind of food we eat. 9. A very healthy group of foods. 10. Too fat with a BMI of over 25. 11. Eating, using. 12. A fossil fuel that is hard, black and dirty. 14. A source of calories found in meat and nuts. 17. Very, very fat. 18. Not eating so much. 'I'm on a _________'. 19. Oxygen, Nitrogen, Carbon etc.