Across
- 3. Type II linked to obesity and lack of exercise
- 7. the poisonous gas in cigarettes
- 8. cancer-causing chemical
- 10. a mistake is made in the DNA
- 11. disease linked to a lack of exercise
- 13. ball of cancerous cells dividing rapidly
Down
- 1. the addictive chemical in cigarettes
- 2. link or relationship between two factors
- 4. diseases caused by pathogens which can spread
- 5. disease associated with the heart
- 6. cancer cells that spread around the body
- 9. mechanism showing one factor influencing another biologically
- 12. black substance that paralyses the cilia