Demography Demography can be defined as scientific‚ mathematical‚ statistical study of population in reference to population density‚ population density‚ population distribution‚ population size and structure‚ population composition. The word Demography was first coined by a Greek Mathematician‚ Achelle Guillard. What means Population? Population means the total number of children‚ youths‚ adults and old people of a certain locality‚ village‚ town‚ city‚ district‚ region or a country. In
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Due to overpopulation‚ problems arise. Poverty is one of the problems that will be evident in cause of overpopulation. There will come a time that the population density of a certain area will skyrocket to uncontrollable values‚ which in turn the area will be prone to disasters such as fire. Fire in cities is a man-made disaster that is present since ancient times. Many people lose their home‚ thing and also their lives due to fire. The most common reasons of fire are faulty wiring of substandard
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bone mineral density after menopause. Fractures are mostly found in the hip‚ spine and wrist. With that being said‚ this type of bone disease can cause ones inability to walk or even death. Fractures in the spine can cause deformity‚ back pain and height loss. Calcium is an important vitamin needed for our bones. It gives us the strength we need to do everyday activities. When there is not enough calcium in the bones it is easier for osteoporosis to be developed. Bone density‚ which is determined
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Overpopulation is not simply a function of the size or density of the population. Overpopulation can be determined using the ratio of population to available sustainable resources. If a given environment has a population of ten‚ but there is food or drinking water enough for only nine‚ then that environment is overpopulated; if the population is 100 individuals but there is enough food‚ shelter‚ and water for 200 for the indefinite future‚ then it is not. Overpopulation can result from an increase
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appropriate indicator to use in order to make valid comparisons is population density (i.e.‚ population per unit of land area). Using this indicator one would find‚ for example‚ that Belgium has a very high population density‚ Pakistan is in the middle‚ and Somalia ranks very low. Of these countries‚ Belgium is not the one with the most difficulties. Nor does Somalia have the fewest. Just looking at population or population density tells us very little about a society’s problems. Within individual countries
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2) Climate Most of the areas of the earth having density less than two persons/sq. km are not favorable for settlement because of their unfavorable climate. Areas of cold climate-North Siberia‚ North Canada‚ Alaska etc. have low density of population. Hot and arid regions of -Sahara‚ Kalahari Desert in Africa‚ Great Australian Desert etc are not suitable for human settlement. In tropical regions due to heavy rain and temperature‚ the density of population is
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Horn‚ 1976High level of dispersalLow level of dispersalMatthews& Kitching‚ 1984The mortality is density-independentThe mortality is density dependentMatthews& Kitching‚ 1984; Horn‚ 1976High reproductive rate and often reach overshootLow reproductive rate and rarely reach overshootMatthews&Matthews‚ 1978; Matthews& Kitching‚ 1984; Horn‚ 1976Population density fluctuative “boom and bust” Population density relative constant from generation to generationMatthews&Matthews‚ 1978; Matthews& Kitching‚ 1984Tend
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or lower with low population density. Record your prediction in the data table and then run the simulator to 100 days three times‚ recording the data each time. Make a prediction for high population density; record it in the data table‚ and run the simulator three times‚ recording that data in the table. Answer the following: 3. What could be done to prevent the spread of disease in a low population density? 4. What kinds of challenges would high population density present to these precautions
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most major cities in the world with high population densities are likely to result in clustering of buildings due to constraints of land resources. Urban settlements tend to be clustered as people in urban settlements are mainly involved in activities like business and manufacturing. All these require transportation and services. Thus‚ having settlements clustered together enables them to have easy access to transportation. Population density here is usually higher than in rural settlements and
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in human demography‚ the population is the set of humans in a given area. Population density is a common biological measurement and is often used by conservationists as a more appropriate measure than absolute numbers. If there are low population densities‚ extinction may be in the future of the species life‚ but is unlikely to occur and a reduced reproduction rate can also be a result. Low population densities result in reproduction to decline due to the increased problems with locating mates‚
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