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Human Population
Stages and their factors
Question | Answer |
---|---|
Indicators reflecting health of country | infant mortality rate, life expectancy |
Morbidity | presence of disease in a population |
Mortality | number of deaths in a population |
Replacement level fertility | the number of children a couple must have to replace themselves |
Average fertility rate | average number of children per woman |
Pre-industrial stage | harsh living conditions, birth & death rates high, population grows slowly, infant mortality high |
Transitional stage | death rate lower due to better health care, birth rate still high so population grows fast |
Industrial stage | decline in birth rate, population growth slows |
Post-industrial stage | low birth & death rates, population stabilized or decreases |
Reasons death rates have declined include | advent of antibiotics, safer water supplies, better nutrition |
Factors affecting population growth/ways to decrease birth rate | : empowerment of women, average age of marriage, education, urbanization, family planning, economic rewards and penalties (China’s one child policy) |
Thomas Malthus | said human population cannot continue to increase, consequences will be war, famine & disease |