Due to an imbalance resulting from poor adjustment between the individual and the environment
Occurrence of an unwanted change in the environment caused by the introduction of harmful materials or the production of harmful conditions(heat,cold,sound).
Making something unfit for a particular use through the introduction of undesirable materials
Materials (pollutants) that are poisonous to people and other living things
Science that studies chemicals that are known to be or could be toxic
Toxin that increases the risk of cancer
The interaction of different substances resulting in a total effect greater than the sum of effects of both substances combined (ex: SO2 and coal dust)
How pollutants are introduced into the environment (ex: smokestacks, pipes)
More diffused over the land and include urban runoff and mobile sources such as automobile exhaust
pose health hazards to people and ecosystems (ex: mercury, lead, silver, gold, chromium)
Accumulation or increase in concentration of a substance in living tissue and moves through food web (ex: mercury in fish)
Compounds of CARBON produced naturally by living organisms or synthetically by human industrial processes
Synthetic organic compounds
Used in industrial processes, pest control, pharmaceuticals, and food additives
POP/ persistent organic pollutants
Synthetic compounds. Polluting and toxic. Soluble in fat and likely to accumulate. Can be transported by wind, water, and sediments.
HAA, hormonally active agent
Potential to cause developmental and reproductive abnormalities in animals, including humans.
May cause health problems, including cancer
Aka heat pollution, occurs when heat is released into water or air produces undesirable effects
Small particles of dust(soot) released into the atmosphere by many natural processes and human activities
Several minerals that take form of small, elongated particles, or fibers
Toasters, electric motors, electrical appliances = controversy over whether these fields produce a health risk
They spread from interactions between individuals and food, water, soil. Malaria(protozoan infection via mosquito), Salmonella(food-poisoning), Anthrax(spread by terrorist activity)
Heavy metals in our bodies
Exposure to toxins and potentially harmful chemicals/ personal pollutants. Tobacco, alcohol, and other drugs.
The effect of a certain chemical on an individual depends on dose.
50% of population dies is called lethal dose 50.
Dos the causes an EFFECT in 50% of population. ex: ED-50 of aspirin would be the dose that relieves headaches in 50% of people
Dose that is toxic to 50% of population. Often used to indicate responses such as reduced enzyme activity.
a level below which no effect occurs and above which effects begin to occur.
Changes in vegetation from a distance from a toxic source
Ability to resist or withstand stress resluting from exposure to a pollutant or harmful condition
Occurs soon after exposure, usually to large amounts of a pollutant
Takes place over long period, often a result of expose to low levels of pollutants
Process of determining potential adverse environmental health effects to people exposed to pollutants and potentially toxic materials