Across
- 1. chemicals that remain in the environment for a long time
- 2. mcolorless, odorless gas found in soil
- 6. disease that appears for the first time or spreads rapidly
- 9. chemicals become more concentrated as they move up the food chain
- 10. methylmercury is an example of this hazard
- 12. mass of sliding snow
- 15. harms embryos and fetuses
- 17. determines how harmful a substance is
- 19. responds to emerging diseases in the US
- 20. type of hazard that includes smoling, poor diet, lack of exercise
- 22. the dose that causes harm
- 24. term for cancer-causing agent
Down
- 1. an outbreak of a disease that affects an entire region or country
- 3. the study of diseases in human populations
- 4. resistance to these is one reason diseases spread rapidly
- 5. ove-activate the immune system
- 7. type of assessment that emasures the chance that an env hazard will cause harm
- 8. causes changes in the DNA
- 11. diseases caused by a pathogen, malaria for example
- 13. fibers from this can become embedded in lungs
- 14. when a substance is harmful in a large quantity
- 16. type of environmental hazard caused by pathogens
- 18. any animal that carries disease
- 21. type of hazard caused by natural disasters
- 22. a funnel of rotating air
- 23. can be in paint and dust, causes brain damage