Across
- 2. masses of snow that slide down a slope
- 7. disease diseases caused by pathogens
- 8. disaster that occurs along active plate boundaries
- 12. chemicals that affect the nervous system
- 13. hazards may include smoking, living near toxic wastes, and eating fatty foods
- 14. monitors health events worldwide
- 15. openings in Earth's crust that eject molten lava
- 16. responds to emerging diseases in the US
Down
- 1. the buildup of toxic substances in the bodies of organisms
- 3. storms that form over tropical oceans
- 4. cancer-causing chemicals
- 5. study of disease in human populations
- 6. rotating funnels of air
- 9. produce lighting and thunder, produce heavy rain
- 10. viruses; organisms that cause disease
- 11. chemicals that over-activate the immune system