factors that threaten or are harmful to human health
hazards
100
the differences that factor in to an individuals response to an environmental hazard
age, sex, weight, health issues and genetic makeup
100
2 ways to reduce the risk of disease
covering your mouth when you cough or sneeze, washing your hands often, or staying home from school or work when you are sick
100
the exposure of radon depends on what
the geology of the place where someone lives
100
a mineral that forms long, thin microscopic fibers
asbestos
200
a disease that has appeared in the human world for the first time, or that has existed for a while but is increasingly rapidly or spreading around the world
an emerging disease
200
the four types of hazards
biological, social, chemical, and physical
200
the percentage of death diseases cause each year
30%
200
two diseases that you can get from asbestos
lung cancer and asbestosis
200
caused by a pathogen, such as a virus or bacterium
an infectious disease
300
determines how harmful a substance is to an organism
toxicity
300
what is looked at when people are exposed to a certain dose of a substance
the concentration of a substance and the length of time an organism is exposed to it
300
3 ways diseases can be spread
water or food, humans, or other organisms
300
two ways you can be exposed to lead
air, drinking water, contaminated soil, lead-based paint, and dust
300
a process in which organisms can build up a large concentration of toxic substances in their bodies
bioaccumulation
400
an outbreak that becomes widespread and affects a whole region, continent or world
a pandemic
400
scientists who study how and where diseases occur as well as how to control them
an epidemiologist
400
2 main reasons why emerging diseases are so dangerous
humans have little to no resistance to the pathogen and no methods (vaccines) have been developed to control them
400
how do chemical hazards on land come from natural sources
volcanic eruptions
400
a process in which each step up the food chain, from producers to primary consumer to secondary consumer and so on, concentrations of toxic substances can be greatly magnified
biomagnification
500
the relationship between the different doses and the response they generate
dose-response relationship
500
what is looked at when measuring risk
the type of hazard, how frequently humans will be exposed to it, and how sensitive people are to it
500
name 4 social hazards
smoking, being exposed to secondhand smoke, living near a toxic waste site, working with harmful chemicals, and eating fatty foods
500
name two responses to being exposed to low levels of carbon monoxide