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Published byTheresa Richard Modified over 8 years ago
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Annual growth rate Birth Rate – Death rate Doubling time 70/rate Annual growth rate 1804 - 1927 1927 – 1959 1959- 1974 1974-1987 1987-1999 1999-2011 Most of human history was in a state of dynamic equilibrium.
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Why the sudden increase? Deaths declined Medical advances Vaccines: 1730 Cell Theory: 1870 Penicillin: 1928
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THOMAS MALTHUS RReproduce faster than food is produced OOverpopulation DDepletion of natural resources, unemployment IIncrease Environmental Resistance AA Modest Proposal KARL MARX UUnequal distribution of wealth PPoverty OOverpopulation TTake from the rich and give to the poor CCommunist Manifesto Human condition Results Which causes Solution
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YES It puts a burden on our finite resources 1.2 billion do not have safe water to drink Greater resource demand Larger cities More pollution Greater chance of diseases spreading. NO Overconsumption is the issue For ever mouth, there are a pair of hands and that will find a solution for their needs. Opportunity for human prosperity Economic, technological growth ….
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World population growth rate peaked in 1960’s, then began to decrease
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Population Density versus Population Cultural Carrying Capacity (I = P*T*A) We can fit into TX. World's population 7,000,000,000. The landmass of Texas 7,500,000,000,000 sq. ft. How many square feet does each person get? How much of an acre (43,560 sq. ft./acre)?
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Which causes more harm to the environment, high population growth rates or overconsumption ?
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Different growth rates = Different problems RRapid growth ▪M▪Migration to cities. Increases poverty, crime, disease ▪M▪Money is diverted from education, infrastructure NNegative growth ▪G▪Graying population ▪E▪Economic declines
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Fertility rates 1.0, 2.1, or 6.o What decides? Religion Economy Government Carrying capacity
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Policy Focus on population size Focus on social justice Government Equal rights, empower women India: forced sterilizations Religious Pres. Bush eliminated funding for Planned Parenthood Economics Demographics transition
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Demographic transition
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