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Across 3. the organism being affected by the agent 5. a disease that suddenly gets out of control 6. the study of disease 7. the rate at which person uses their energy 8. so small that they cannot even be seen with a 'normal light microscope' but can only be seen with a much powerful electron microscope 9. illnesses that caused by your thoughts and feelings 10. invasion of the body by foreign organisms 12. an outbreak that goes global, placing everyone on the planet at risk 13. Substance that is used by an organism either as a source of energy to bulid living tissue 14. anything that causes the disease 17. anohter eating disorder marked by a binge-purge cycle 18. a disease that regularly affects a small number of people in the population 19. sometimes called protists 20. a mineral used by the body

Down 1. people that work in the field of disease 2. eating disorder 4. any living thing 11. an organism so small that it can only be seen with a microscope 15. higher than normal numbers of people are affected by a particular disease in a certain place 16. an agent that uses the host for food or shelter(e.g worms & fleas)