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Growth And Demography: The Consequences Of Population And Demography

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1.0 INTRODUCTION
Population and demography are two closely related terms and for the purpose of this study we define them for better understanding. Population- according to dictionary.com is defined as the total number of persons inhabiting a country, city, or any district or area while
Demography has been described as the "quantitative study of human populations" (Ross 1982).
Population growth refers to the increase in the total number of individuals in a population. It is determined by the number of births, number of deaths and inflow or outflow of people from that locality. The scientists have gone further to quantify it using various parameters e.g. population growth rate.
Population growth rate is the change in population over a unit time period, usually expressed as a percentage of the number of individuals in the population at the beginning of that period. If there is increase in population, the population growth rate will be positive and a negative growth rate shows that population is decreasing.
World population growth
The World Population is the total number of living humans on earth on a given time . As 9th Feb. 2010 , the earth’s population is estimated by UNITED NATIONS CENSUS BUREAU to 6,801,600,000 . The fastest rates of the world population growth is above 1.8 % , were seen briefly during the 1950’s , then for a longer period during 1960’s and 1970’s 1.1 SIGNIFICANCE OF THE CONCEPT
Population is a
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Jonathan Swift’s essay, A Modest Proposal, is famous for satirically suggesting that people start selling their babies for food, which would logically solve the overpopulation and starvation problem in the world. Despite this less than feasible solution, overpopulation is a serious problem in the world, given that there are over seven billion people alive currently. The excessive amount of people living in this world has an adverse effect on both society and the environment. The environment has been destroyed by human pollution and is depleted of natural resources due to the sheer amount of materials needed to support such a large population. In fact, many plastic water bottles used by people are discarded as trash and pollute bodies of water (Soechtig & Lindesy, 2009).

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A very controversial topic in the past few years has been immigration. Immigration is better for Canada because it helps introduce different cultures, increase Canada 's growth, and raise economic worth. Canada is well known for its diverse cultures. Immigration helps introduce many new cultures to Canada, aiding it to keep the diverse, vibrant and accepting identity that Canada currently has today (Vaughan). The reason immigration helps give Canada the identity it has today is because if Canada didn 't accept immigrants it would be less diverse and more un-inclusive.

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In the 1900s, the total population of Canada was 5,310,000, and a century after in 2000, it sextupled to 30.77 million people. Despite a fertility rate of 1.6 children per female, Canada’s current population growth rate is 1.2% . If this continues at this rate, it would result in a doubling of the population. There will be less habitable and arable land for our citizens to live on and people are more liable to falling ill easily as air-borne illness can be easily transmitted between citizens. Medical personnel may not be able to be deployed efficiently to treat the sick.

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In the 21st century, population studies are very significant in looking at characteristics of a country, habitat, community and other environments. For example, in the human population, people are interested in a country’s population growth/decay, as the production of goods, social reforms/support or other needs of the people can be suggested. If a population is decreasing, there can be efforts made to improve medications and social support to increase the population and decrease the death rates. But do we actually know how population is modeled and how accurate these models are? This exploration aims at comparing logistic and exponential growth models, the two main models used for population growth, and to determine the extent of how realistic

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