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Lecture 2

Week 2 Lecture Note

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University of Toronto Scarborough

Exams: each of the exams will include short note questions and essay questions Malthus dawning: Are we too many? Theories and idea on how population growth will benefit or not benefit the world Ideas will follow us through most or all of lectures in future Current World Population More and more people are living on this planet World population growth rate However, the world population growth rate is declining We will become less more over the years World population growth rate = surplus of population in comparison to years in time Population growth rate = pop t2 pop t0 pop t1 World population throughout history We will get less more on this planet Is this a benefit or catastrophe? Population densities 2010 Population density = total population area Canada has the least dense population among these countries Although there are other countries that are really rich (i.e. Netherlands), they deal with more people, so its one of the most highly dense country in the world India is big country and quite a lot of people per square kilometres live The media covers this topic on a daily basis food prices to rocket as population explodes We were concerned about population growth in 1970s and 80s, and we should still be concerned nowadays Malthus prophecy There are other theories out there that state the world cant hold that many people anymore When Malthus made his prophecy, there were about 3 billion people worldwide and he was concerned about this state especially when he looked at the food production and the technologies out there to cater these populations Malthus thought in late 18 century that these two statements he made were fixed laws of nature: 1. People have to eat fixed law 2. We like to procreate and have sex and get children Malthus prophecy (contd) Geometrical ratio = population is increasing exponentially Arithmetical ratio = population would increase in a linear way
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