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Please get out your objectives #1-4 for a stamp.

No, don’t worry – I got this!. Please get out your objectives #1-4 for a stamp. While you wait for the stamp, compare your answers with your neighbors’. Add new or missing ideas in the lines between answers with a different colored pen. Human population milestones.

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Please get out your objectives #1-4 for a stamp.

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  1. No, don’t worry – I got this! • Please get out your objectives #1-4 for a stamp. • While you wait for the stamp, compare your answers with your neighbors’. Add new or missing ideas in the lines between answers with a different colored pen.

  2. Human population milestones The ultimate in carpooling? LOL

  3. Check this out!

  4. Which parts of the S-curve of population growth are already apparent?

  5. Nomadic – moved around Small family groups Life expectancy low – poor nutrition, no disease prevention, hard life Population was small because of limiting factors Hunter Gatherer societies

  6. What was the Agricultural Revolution, and how long ago did it happen?

  7. Agricultural revolution – 8,000 BCE People learned how to grow food – a new technology that changed limitations of food

  8. Change #1. Food surplus created demand for larger families (more kids meant more food produced)

  9. Children increase agricultural productivity

  10. Change #2. Settlements created along waterways for transportation – now people could trade for goods and food, even if they had a bad farming year.

  11. What was the only time that population decreased significantly?

  12. Bubonic Plague – 1390’s In Europe, killed 1/3 of population

  13. When did humans begin their exponential growth?

  14. Changes after 1930 • Better nutrition (more variety, better preservation, greater quantity increased life expectancy) • Better sanitation (running water, sewage systems, garbage collection reduced death and disease) • Better health care (germ theory of disease, antibiotics reduced death and disease)

  15. How big will our population get? • UN projection: 9.3 billion by 2050 • World growth rate is has been decreasing since 1967 • China’s peak projected for 2026 at 1.4 billion and then by 2045 it will be smaller than today

  16. Check for understanding. • What are the three parts of the S-curve of population growth? • Does a population know when it reaches carrying capacity? • What happens to a population that goes above its carrying capacity? • Name four limiting factors that would set the carrying capacity for humans. • Why would the three changes after 1930 increase population size?

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