Just a Number
Arsenic, Mercury, Lead, Vinyl Chloride, Polychlorinated Biphenyls
chemical
measure of the ability to cause injury, illness, or death
toxicity
this substance comes from the natural break down of uranium
radon
the factor contributing the most to the exponential growth of the human population
better food and increased hygiene
3 of the 5 hazards posing risk to human health
biological, chemical, natural, cultural, lifestyle choices
1. Hazard identification
2. Probability of Risk
3. Consequence of Risk
Risk Assessment Steps
if the average lethal dose is less than 7 drops, this substance is considered
supertoxic
the study of the harmful effects of substances on living organisms
toxicology
The average life expectancy ______ after the industrial revolution due to a significant decrease in the ______ rate.
increased / infant mortality
3 microorganisms causing infectious diseases
bacteria, viruses, parasites
infectious disease that can be passed from one person to another
transmissible
a short term response to damage to health as a result of exposure is called
accute effect
adequate sewage treatment facilities for growing populations could possibly alleviate an increase in
water born diseases
Which region is experiencing the biggest increase in population
Asia
3 of the 8 ways to reduce the incidence of infectious disease
increase research on disease and vaccines
reduce poverty
improve drinking water
reduce use of antibiotics
reduce antibiotics on livestock
immunizations
oral rehydration for dehydration
reduce HIV/AIDS
2 ways pollution can be hazardous (ex: lead poisoning or contaminated water)
direct and indirect
the smallest amount of exposure that will cause a specific and measured effect
threshold dose
Which type of toxin soluability is most dangerous to your body
fat soluable toxin
During the last 200 years, the human population has undergone ________ growth.
exponential
3 categories of chemical hazards
carcinogens, mutagens, teratogens
chemicals that harm a fetus or cause birth defects
teratogens
a substance that causes nerve damage, cancers, etc is said to be
toxic
type of toxin that breaks down slowly in the environment
persistent toxin
Countries with high growth rates usually have an age structure that has...
more younger people than older people