human overpopulation slides

However, studies show that wealthy and educated people are far likelier to eat healthy food,[233] indicating obesity is a disease related to poverty and lack of education and excessive advertising of unhealthy eatables at cheaper cost, high in calories, with little nutritive value are consumed. Social Problems 42.3 (1995): 318-343. 9 November 2013. [151][152][153][154] Present extinction rates may be as high as 140,000 species lost per year due to human activity, such as slash-and-burn techniques that sometimes are practiced by shifting cultivators, especially in countries with rapidly expanding rural populations, which have reduced habitat in tropical forests. In an overpopulated environment, the numbers of people might be more than the available essential materials for survival such as transport, water, shelter, food or social amenities. [64], In other parts of the globe, China's population census at the founding of the Ming dynasty in 1368 indicated that the population stood close to 60 million, (though these figures are debated by some historians) approaching 150 million by the end of the dynasty in 1644. All of these in which women have, on the average, more than 4 children in their lifetime, have a per capita GDP of less than $5,000. [26], World population has been rising continuously since the end of the Black Death, around the year 1350. [349] Cities concentrate human activity within limited areas, limiting the breadth of environmental damage. [136] There are also economic consequences of this environmental degradation in the form of ecosystem services attrition. [180] Some critics warn, this will be at a high cost to the Earth: "the technological optimists are probably correct in claiming that overall world food production can be increased substantially over the next few decades...[however] the environmental cost of what Paul R. and Anne H. Ehrlich describe as 'turning the Earth into a giant human feedlot' could be severe. Even with the overpumping of its aquifers, China has developed a grain deficit. We are wrecking our planet's life support systems. Irrigation poses one of the largest problems, because without sufficient water to irrigate crops, the crops die and then there is the problem of food rations and starvation. Discover the best Google Slides themes and PowerPoint templates you can use in your presentations - 100% Free for any use. [293] And in order to achieve a sustainable economy and avert disaster, the United States would have to reduce its population by at least one-third, and world population would have to be reduced by two-thirds. Furthermore, it displays political slogans and philosophical proverbs against human overpopulation in order to save nature from eradication. presentations for free. Inherited Variation ... By studying an organisms behaviors and impacts in their environment, ... - Unit 2: Population & Migration Test Review IV. Officially, men with two children or more had to submit to sterilization, but there was a greater focus on sterilizing women than sterilizing men. 39, no. Some problems associated with or exacerbated by human overpopulation and over-consumption are presented in the sections below. India's overpopulation. He notably said: "What most frequently meets our view (and occasions complaint) is our teeming population. If only we had put all that money into condoms, we might have done some good. The richest farmland was plowed and the richest mineral ore mined first. A 2014 study published in Science asserts that population growth will continue into the next century. Further environmental impacts that overpopulation may cause include depletion of natural resources, especially fossil fuels. [27] The fastest doubling of the world population happened between 1950 and 1987: a doubling from 2.5 to 5 billion people in just 37 years,[28] mainly due to medical advancements and increases in agricultural productivity. By The Overpopulation Project. OVERPOPULATION Occurs when the resources available can t meet the needs of the people. 61, No. Source: MPHOnline.org That has to change", "The Psychology of Denying Overpopulation". Instead of being something productive, the population growth is a barrel of explosives. Pediatrics 112.Supplement 1 (2003): 253-258. The carrying capacity ... Overpopulation can lead to the overuse and, Human activities overgrazing, deforestation, Nomads graze more cattle on the land than it can, Less tress mean reduced transpiration of moisture, As a result the atmosphere contains less moisture, Animal manure may be used as fuel, thus depriving, Plantation workers get small tracts of land, To feed their families they grow crops here, Soil loses its nutrients and becomes useless, 30 decrease in rainfall levels in the Sahel in. According to many studies, about 80% of the remaining fossil fuels must be left untouched because the bottleneck has shifted from resource availability to the resource of absorbing the generated greenhouse gases when burning fossil fuels. Whenever a price spike would occur, the market tended to correct itself whether by substituting an equivalent resource or switching to a new technology. The PowerPoint PPT presentation: "Overpopulation" is the property of its rightful owner. It concludes that world oil peaking is going to happen, and will likely be abrupt. [89] Today, more than nine out of ten children born in industrialized nations reach adulthood. A number of nuclear powered desalination plants exist;[193][194] however, the high costs of desalination, especially for poor countries, makes the transport of large amounts of desalinated seawater to interiors of large countries impractical. Overpopulation is caused by number of components. By most estimates, at least half of cultivable land is already being farmed, and there are concerns that the remaining reserves are greatly overestimated.[209]. [230] The world population has grown by about four billion since the beginning of the Green Revolution and most believe that, without the Revolution, there would be greater famine and malnutrition than the UN presently documents. [278] This means that both the worry that the theory generated about aging populations and the complacency it bred regarding the future environmental impact of population growth could need reevaluation. [126] But the region's population roughly doubled between 1970 and 1996. Initiating a mitigation crash program 20 years before peaking appears to offer the possibility of avoiding a world liquid fuels shortfall for the forecast period. Effects of Overpopulation on the Environment. In the medium variant, global fertility is projected to decline further to 2.05 children per woman. Critics of this theory point out that, in the modern era, birth rates are lowest in the developed nations, which also have the highest access to food. JSTOR, www.jstor.org/stable/4606831. [222], Some scientists argue that there is enough food to support the world population,[223][224] and some dispute this, particularly if sustainability is taken into account. Because the soil is exhausted, it is then unable to produce the same amount of food as before, and is overall less productive. "A stitch in time: Addressing the environmental, health, and animal welfare effects of China's expanding meat industry."