PPT-Overpopulation?

Reflections on 7 Billion Source National Geographic Magazine January 2011 Before the 20 th century no human had lived through a doubling of the human population but there are people alive today who have seen it triple. Illegal Aliens and American Medicine by Madeleine Pelner Cosman, Phd., Esq. for the Journal of American Physicians and Surgeons, finds: By default, we grant health passes to illegal aliens. Yet many i Water in the Chihuahuan Desert on both sides of the U.S.-Mexican border is both crucial and scarce. As human settlements and populations grew, more and more water was diverted from natural resources t Are we heading into a global food crisis that alsoeffects Norway?Is this a result of climate change? 2 The world has a huge problem-that no one wants to talk about.Page 6.Population-World Population A Suharsh Sivakumar. December 11, 2010. Cellular Automaton. A grid of cells where all the cells are governed by a common set of rules based on the number of adjacent neighbors.. As generations go by, the rules work together to show very interesting phenomena in the big picture. . Case Study Number 2: Bangladesh. Where is it? . South East Asia. Famous for Bengal Tiger. Bangladesh. Resources at risk. Social and cultural factors. Effects of overpopulation. Effects of overpopulation continued:. Ecology. Ecology: The study of the relationship between organisms and their environment.. Example problems that ecology handles. How do humans affect the atmosphere and contribute to global warming? . and International Development. To address Africa’s population issues:. end child marriage & keep girls in school,. meet the high level of unmet need for family planning & make contraceptives universally accessible. Air pollution . -.  Harmful gases and tiny particles (like carbon monoxide, nitrogen dioxide and . sulphur. dioxide) when released into the air pollute the air. The smoke released from burning fuel, from factories and not to forget the motor cars are the major sources of air pollution. . Why Is Population Increasing at Different Rates?. Demographic Transition Model. A . model. . of population change where high birth rates and death rates . transition. to low birth rates and death . Chapter 68. Chapter summary:. Climate:. North Sudan = hot, dry climate, South Sudan = tropical climate.. Climate is changing in Sudan since the 1970s.. The country is suffering from severe drought.. Desertification (the spreading of desert like conditions) is increasing especially in Sahel regions of the country. Why might (not) the world face an overpopulation problem?. Reminder. All handouts due on test day. Demographic transition w/ pop pyramids on back. Interpreting pop pyramids activity. Demographic momentum. Overpopulation. Targeting the causes of biodiversity loss: Overpopulation control. Deforestation. Over-harvesting. Habitat modification. Household. Energy. Food. Human needs. To many humans. Wealth. Corruption. Thomas Malthus. English economist (1766-1834). World’s population growth was outrunning food supply. In . An Essay on Principle of Population . (1798), Malthus claims that population grows geometrically and food supply increases arithmetically..