Physics 218, Lecture XIII1 Physics 218 Lecture 13 Dr. David Toback.
Due for Wednesday (today): 211 starting at Population and Society 218 stopping at HIV / AIDS is...
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Transcript of Due for Wednesday (today): 211 starting at Population and Society 218 stopping at HIV / AIDS is...
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• Due for Wednesday (today): 211 starting at Population and Society 218 stopping at HIV / AIDS is exerting…
• Due 218 starting at HIV / AIDS is exerting… to the end of the chapter. We will spent a fair amount of time on HIV / AIDS
• Next week’s vocab Words 46-50: Quiz will be Saturday!
• 46. Manipulative Experiment• 47. Correlation Experiment / Study • 48. Fauna • 49. Dr. Salk • 50. R Species vs K Species
Homework
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Do now
• What is the connection between the Destiny Africa group and the topics we are discussing? Hint, where was the group from and what is the greatest issue in that region?
• Group is from Uganda • The area is ground zero for HIV / AIDS
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Quick Review• What is IPAT?• Impact = Population x Affluence x Technology,
sometimes add S for sensitivity, meaning development in a sensitive area.
• Strong nations tend to have slow population growth. Why?
• Demography? What is it?
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Population distribution
• Humans are unevenly distributed around the globe• Unpopulated areas tend to be environmentally
sensitive (high S value in the IPAT equation)– Vulnerable to humans (e.g., deserts, arid grasslands)
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Age structure affects population size
• Age structure diagrams (population pyramids) show age structure
• Wide base = many young:– High reproduction – Rapid population
growth• Even age
distribution:– Remains stable– Births = deaths
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Canada’s age structure is balanced
Madagascar’s age structure is heavily weighted toward the young
Age structures: Canada vs. Madagascar
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New Material• Transition Demographics – explain the chart
below
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Reading to focus on• Why did Fertility Decline in Bangladesh
decline?• Education of women:• Better opportunities• Greater chance of not living in poverty• Longer lives• Educating women reduces fertility rates,
delays childbirth, and gives them a voice in reproductive decisions
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Empowering women reduces growth rates
• Fertility rates drop when women gain access to contraceptives, family planning programs, and educational opportunities
• Women with little power have unintended pregnancies–Two-thirds of the world’s illiterate are
women
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Correlation of poverty and population
• Poverty exacerbates population growth – Population growth exacerbates poverty
• In 1960, 70% of all people lived in developing nations– As of 2010, 82% live in these nations
– 99% of the next billion will be born in these nations
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Poverty & environmental degradation• Population growth in poor nations increases
environmental degradation– Farming degrades soil in arid areas (Africa, China)– Poor people cut forests, deplete biodiversity, and hunt
endangered species (e.g., great apes)
Africa’s Sahel and western China are turning to desert
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Question • In the industrialized world, what is the
greatest cause of death?• Heart Disease – directly related to poor
diets (obesity).• What about in the 3rd World?• AIDS, why?• Is AIDS really an issue in the United
States?