Definition 2 of 79
the number of births in a year for every 1,000 people in a population
biotic potential
birth rate
Doubling time
3 limiting factors
Definition 3 of 79
research methods that involve observing behavior to describe that behavior objectively and
systematically
Careers with EHS Degree
descriptive research
Population Projections
explanatory research
,Definition 4 of 79
published first edition of "diseases of workers"
George Perkins Marsh
carrying capacity
Bernardina Ramazzini
Environmental Science
Definition 5 of 79
a curve that depicts logistic growth; shape of an "S" (sigmoidal)
J-curve
S-curve
death rate
growth rate
Definition 6 of 79
Environmental Science
Environmental and occupational medicine
Toxicology
Epidemiology
4 characteristics of the scientific method
Reducing Post-Harvest Food Losses
4 subdivisions of environmental health
Careers with EHS Degree
,Definition 7 of 79
Formerly Public Health and Marine Hospital Services (PHMHS)
Human diseases (such as, tuberculosis, hookworm, malaria, and leprosy), sanitation, water
supplies and sewage disposal
Scientific Method
Thomas Malthus
public health service act
Reducing Post-Harvest Food Losses
Definition 8 of 79
-Increasing number of elderly, decreasing number of birth rates
-Worst in Japan and Europe
Thomas Malthus
global graying
Doubling time
growth rate
Definition 9 of 79
The average number of children born to a woman during her childbearing years.
Categories of essential health services
#2 Cause of death from the environment
George Perkins Marsh
total fertility rate
, Definition 10 of 79
United States biologist remembered for her opposition to the use of pesticides that were
hazardous to wildlife (1907-1964)
silent sprig
GRADE approach
global graying
Rachel Carson
growth rate
Definition 11 of 79
birth and death rate is in balance (asymptote of the curve)
communicable disease center
descriptive research
Bernardina Ramazzini
stead-state equilibrium
Definition 12 of 79
This is when the projection population shows exponential growth; sometimes shape as a j-
curve. This is important because if the population grows exponentially our resource use will go
up exponentially and so will our use as well as a greater demand for food and services.
Frequently leads to population crashes
environment
J-curve
medicine
Iodine deficiency
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