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Population Dynamics

Population Dynamics. Natural change and Actual Change. Natural Change. A change in the population due to the difference in # of births and the # of deaths . BIRTHS - DEATHS = NATURAL CHANGE BIRTHS > DEATHS = NATURAL INCREASE BIRTHS < DEATHS = NATURAL DECREASE.

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Population Dynamics

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  1. Population Dynamics Natural change and Actual Change

  2. Natural Change • A change in the population due to the differencein # of birthsand the # of deaths. BIRTHS - DEATHS = NATURAL CHANGE BIRTHS > DEATHS = NATURAL INCREASE BIRTHS < DEATHS = NATURAL DECREASE

  3. Which Natural Change? • 6300 Births 7800 Deaths • Population had a NATURAL DECREASEof 1500 people. • 4800 Deaths 5500 Births • Population had a NATURAL INCREASEof 700 people.

  4. Birth Rate • The # of birthsper 1000 population. Calculation:

  5. Death Rate • The # of DEATHS per 1000 population. Calculation:

  6. Rate of Natural Increase (RNI) • Difference between the Birth Rate and the Death Rate • Formula: • RNI = BR - DR • Like before: • positive number (+) = naturally increasing population • negative number (-) = naturally decreasingpopulation

  7. Sample Exam Question

  8. Sample Exam Question WITH Other Distracting Stats!

  9. Sample Exam Question

  10. Highly Developed Countries: Population, BR & DR • Have a stable population! • Birth Rates are generally low • Death Rates are also generally low. • WHY?

  11. Highly Developed Countries – BR: The REASONS! Birth Rates are generally low because: • Access to birth control • Affordable birth control • Women choosing careers (less kids, no kids, kids later in life) • Lifestyles…leisure, travel, materialistic • Education about family planning • MUST STUDY!!!!!!

  12. Highly Developed Countries – DR: The REASONS! Death Rates are also generally low: • Advances in modern medicine and technology • Access to health care • Affordable health care • Education & knowledge about healthy lifestyles & choices. • Improved water and sanitation!!!! • Better nutrition choices!!!!

  13. UnderdevelopedCountries: Population, BR & DR • Have an EXPANDING population! • Birth Rates are generally high. • Death Rates are also generally high. • Expanding because births are exceeding deaths at larger rates. • WHY?

  14. Underdeveloped Countries • Birth Rates are generally high because: • LITTLE to NO access to birth control • Can’t Afford birth control..(food or birth control??) • Children needed or used to contribute to the family (labor, money, food) • Lack of education about family planning

  15. Underdeveloped Countries • Death Rates are also generally HIGH: • Lack of modern medicine and technology • Little or NO access to health care • Unable to afford health care • Lack of education & knowledge about healthy lifestyles & choices. • Lack of clean water and sanitation • Malnutrition

  16. Actual Population Change & Migration • Migration means the MOVEMENT of people from place to place. • Immigration is the movement of people INTO a country. ADDS to the receiving countries population. • Emigration is the movement of people OUT of a country…EXIT. TAKES away from the country of departure.

  17. Actual Change • While Natural Change only deals with births and deaths… • Actual change recognizes ALL factors that can change a population. Births, deaths, Immigration and Emigration. • AC = (B + I) – (D + E) AC = (Births + Immigration) – (Deaths + Emigration)

  18. More on migration!! • NET MIGRATION = the difference between immigration and emigration. • MAP shows countries with +/- Net Migration.

  19. More on migration!! • INTERNAL MIGRATION refers to the migration of people within a country province or region. • Newfoundland Labrador in the past 20+ years had been moving to Alberta & Ontario in search of jobs etc. OR • Newfoundland Labrador experiences a fair degree of internal migration as people move from smaller outports to St. John's.

  20. Sample MC Question

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