PEE 1.3 The Human Population Flashcards
Population grew due to this 3 major factors
a. early and modern agriculture
b. technologies
c. improved sanitation and health care
The doubling time of the human population or of any growing quantity can be calculated by
using the?
rule of 70
Rule of 70 Formula
doubling time (in years) = 70 / annual growth rate (%)
Population statistics
Demographics
Statistical study of populations
Demography
Population experts
Demographers
3 important trends related to the
current size and impact of the human population:
a. Decreasing
b. Uneven distribution
c. Growing population
The average number of children born to the women in a
population during their reproductive years
Total Fertility Rate (TFR)
The numbers or percentages of males and females in young, middle, and
older age groups in that population
Age Structure
The average number of years a person born in the year of the estimate can
be expected to live
Life expectancy
The number of babies out of every 1,000 born who die before their
first birthday
Infant mortality rate
The movement of people into (immigration) and out of (emigration) specific
geographic areas.
Migration
People who have to leave their homes and sometimes their
countries because of water or food shortages, soil erosion, or some other form of
environmental degradation or depletion
Environmental refugees
Women tend to have fewer children if they are educated, have the ability to control their own
fertility, earn an income of their own, and live in societies that do not suppress their rights.
Women Empowerment
This involves the provision of education and clinical services that can help couples to choose
how many children to have and when to have them.
Family Planning
