Across
- 2. (two words) The fertility rate that keeps a population stable (about 2.1 births per woman in developed nations).
- 4. (two words) The correlation between the dose of a substance and the intensity of its effect.
- 5. (two words) The 2004 international treaty created to phase out or restrict the use of persistent organic pollutants (“the dirty dozen”).
- 8. (three words) The average number of children a woman has in her lifetime within a population.
- 9. An organism (such as a mosquito or tick) that transmits pathogens to humans.
- 11. (two words) The total area of land and water needed to provide resources and absorb wastes for a population.
- 12. The process by which concentrations of toxic substances increase in organisms at higher trophic levels.
- 13. (two words) The maximum number of individuals that an environment can sustainably support.
- 14. A substance that damages or impairs the nervous system.
- 16. The buildup of a toxic substance within the tissues of an individual organism over time.
- 17. The study of how poisonous substances affect organisms’ health.
- 18. (three words) A toxic chemical that resists breakdown, remains in the environment for long periods, and bio-magnifies through food webs.
- 20. (two words) A disease that has appeared for the first time in humans or is rapidly increasing in spread.
Down
- 1. A chemical that causes cancer.
- 3. (two words) A chemical that interferes with hormones in the body, altering growth or reproduction.
- 6. (two words) The model that explains the change from high birth and death rates to low birth and death rates as a society industrializes.
- 7. (three words) Carbon-based chemicals that easily evaporate and may irritate or harm tissues.
- 10. A chemical that harms embryos or fetuses, causing birth defects.
- 15. (two words) The process of estimating the likelihood that exposure to a hazard will cause harm.
- 19. A massive ocean wave triggered by an underwater earthquake or volcanic eruption that can cause widespread coastal destruction.