Overpopulation - WordPress.com · 06/06/2015 · Overpopulation Get out a sheet of graph paper,...
Transcript of Overpopulation - WordPress.com · 06/06/2015 · Overpopulation Get out a sheet of graph paper,...
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Overpopulation
Get out a sheet of graph paper, label it Page 714: Overpopulation Notes
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Overpopulation
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Overpopulation
Overpopulation isn’t one of the problems… it’s the only problem.
. .
- Dr. Charles Hall, Systems Ecologist
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Exponential Growth – the more organisms there are, the more they reproduce
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Population of Bacteria
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Bacteria runs out of food, gets too crowded,
starts to die…
Population of Bacteria
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Population of Moose
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Moose ran out of food, got too crowded, started to die…
Population of Moose
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Human Population
1. On Page 714, set up a graph with the years 1100-2000 on the X-axis and with human population on the Y-axis.
2. Graph the data to the right.
3. Try to project the data into the future.
Human Population by Year
1100 – 0.35 billion 1600 – 0.7 billion
1200 – 0.4 billion 1700 – 0.85 billion
1300 – 0.45 billion 1800 – 1.0 billion
1400 – 0.5 billion 1900 – 1.8 billion
1500 – 0.6 billion 2000 – 6.0 billion
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Human Population
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“Human population will eventually need to stop growing. And when this occurs, what will the situation be for mankind?” - Garrett Hardin, 1968
Human Population
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Estimates of how many people Earth can hold vary, but are somewhere around 10 billion
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Estimates of how many people Earth can hold vary, but are somewhere around 12 billion Effects of Having Children…
Positives Negatives
- Family - Love - Fun
- Litter - Deforestation - Pollution - Global Warming - Toxic Waste - Overfishing - The Great Pacific Garbage Patch - Traffic Jams - Landfills - CO2 production - Oxygen use - Water pollution - Light pollution - Less space
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Estimates of how many people Earth can hold vary, but are somewhere around 12 billion Effects of Having Children…
Positives Negatives
- Family - Love - Fun
- Litter - Deforestation - Pollution - Global Warming - Toxic Waste - Overfishing - The Great Pacific Garbage Patch - Traffic Jams - Landfills - CO2 production - Oxygen use - Water pollution - Light pollution - Less space
On Page 714, summarize the problem of “Human Overpopulation” in your own words.