The average number of years an individual can be expected to live given current social, medical, and economic conditions. Life expectancy at birth is the average number of years a newborn infant can expect to live.
carrying capacity
The number of people, other living organisms, or crops that a region can support without environmental degradation
Arithmetic density
Total number of people divided by the total land area
Sex ratio
The number of males per 100 females in the 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 managment
Crude Death Rate (CDR)
The number deaths in a year per 1,000 people alive in a society
Physiological Density
The number of people per unit of area of arable land, which is land suitable for agriculture
Population density
A measurement of the number of people per given unit of land
Arable
land capable of beining plowed and used to grow crops
Land degradation
Long term damage to the soil's ability to support life
