SS Unit 2 Vocab Flashcards
Carrying Capacity
The population size of a species that the environment can sustain indefinitely, given the available resources
Overpopulation
A situation in which the number of people in an area exceeds the capacity of the environment to support life at a decent standard of living
Ecumene
The portion of Earth’s surface occupied by permanent human settlement
Arithmetic Density
The total number of people divided by the total land area
Physiological Density
The number of people per unit area of arable land
Arable Land
Land that is suited for agriculture
Agricultural Density
The ratio of the number of farmers to the total amount of arable land
Natural Increase Rate (NIR)
The percentage growth of a population in a year, computed as the crude birth rate minus the crude death rate
Crude Birth Rate (CBR)
The total number of births in a year for every 1,000 people alive in the society
Total Fertility Rate (TFR)
The average number of children a woman will have throughout her childbearing years
Infant Mortality Rate (IMR)
The total number of deaths in a year among infants under 1 year of age for every 1,000 live births in a society
Crude Death Rate (CDR)
The total number of deaths in a year for every 1,000 people alive in the society
Demographic Transition
The process of change in a society’s population from a condition of high crude birth and death rates and low rate of natural increase to a condition of low crude birth and death rates, low rate of natural increase, and higher total population
Maternal Mortality Rate
The annual number of female deaths per 100,000 live births from any cause related to or aggravated by pregnancy or its management( excluding accidental or incidental causes)
Sex Ratio
The number of males per 100 females in the population
