Environmental Science

2. chemicals that cause cancer
7. lethal dose that kills 50% of the individuals
10. those caused by infectious agents, known as pathogens.
14. how long a chemical remains in the environment.
15. examples are plague, malaria and tuberculosis.
16. the increase in a chemical concentration in animal tissues as the chemical moves up the food chain.
17. chemicals that interfere with the normal functioning of hormones in an animal’s body
18. chemicals that interfere with the normal development of embryos or fetuses
19. when two risks come together and cause more harm that one would.
20. examples are HIV/AIDS, ebola, mad cow disease, bird flu, and west nile virus.

1. monitor people who have been exposed to a chemical at some time in the past.
3. slowly impairs the functioning of a person’s body.
4. rapidly impair the functioning of a person’s body.
5. examples are acute diseases, chronic diseases, and infectious diseases
6. chemicals that cause allergic reactions.
8. examples are neurotoxins, carcinogens, teratogens, allergens and endocrine disruptors.
9. chemicals that disrupt the nervous system.
11. effective dose that causes 50% of the animals to display the harmful but nonlethal effect
12. an increased concentration of a chemical within an organism over time.
13. monitor people who might become exposed to harmful chemicals in the future.