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Environmental Hazard

vocabulary from NCSCOS goal 3 Objective 4.09 and 4.10

QuestionAnswer
toxin A naturally occurring or synthetic substance or agent that may injure an organism exposed to it
acute exposure A single exposure to a toxic sub-stance that results in a severe response or death
potency the capacity of a chemical to produce strong physiological effects
chronic exposure Exposure to toxic chemicals occurring over a long period of time concentration
risk taking a chance at harmful consequences
dose The total amount of a toxicant, drug, or other chemical that is administered to, or taken by, an organism
individual susceptibility Differences in reactions between people after exposure to the same amount of a hazardous substance
individual susceptibility A person’s body size, age, gender, genetics, and health status
higher susceptibility very old, very young, people with compromised immune systems, people with asthma (more susceptible to breathing problems) ,obese (more susceptible to many health issues including heart problems)
chemical Any substance having a defined molecular composition
dose response How an organism’s response to a toxic substance quantitatively shifts as its overall exposure to the substance increases
benefit positive results
dose of carbon monoxide may cause drowsiness; a large dose can be fatal
element A form of matter that cannot be broken down into simpler substances
Elements exist in nature as solids, liquids, or gases
environment The interdependent system of living and nonliving things
carcinogen causing cancer
synthetic prepared or created artificially man-made, not found in nature
over-the-counter medication that is obtained without a prescription
inhalation the taking into the body via the mouth
ingestion the breathing in of a substance in the form of gas, vapor, fumes, or dust
absorption exposure to a chemical by permeation through the skin
lethal dose the amount of a drug that would be fatal in the majority of the people
Created by: dsf