why population need to studies
TRANSCRIPT
DEFINITION• A population is a summation of all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding.
• In ecology, the population of a certain species in a certain area is estimated using the Lincoln Index.
Studying Population
• The study of population is referred to as demography
• A person who studies population is a demographer
• The statistics gathered are demographics
DEMOGRAPHY• The statistics such as births, deaths, income, or the incidence of diseases, which illustrates the changing structure of human population.
• The study of composition of a particular human population.
POPULATION• 6th largest population (185.9 million)
• Growth rate: 1.6%
• Birth rate: 31 births/ 1000
• Death rate: 8/ 1000
• Life expectancy: 63.4years 62(M), 64(F)
• Infant Mortality: 61.27deaths/1000 live births
POPULATION DENSITY• The density is the number of people per unit area (per sq. mile, per sq. km, etc.)
• Population Density = = 230
• FACTORS affecting population density:– Physical: Relief, Climate, Soil, Water Supply, Natural Vegetation, etc.
– Human: Economic, Political, Social