PPT-Population growth theories

and projections For many years people have written about the whys and hows of population growth Optimists have concentrated on how the people adapt to the demands of population Pessimists write about the problems that population growth has caused or may cause. Part II. The Impact of Cesare Lombroso. Lombroso’s perspective was the dominant theory in the early 1900s. Argued criminals were less evolved than noncriminals . Throwbacks to our ancestors . However, this perspective and other biological theories were soon discredited and abandoned. Image from Wikimedia Commons. Global human population. United Nations . projections (2004) . (. red. , . orange. , . green. ). . U. S. Census Bureau modern (. blue. ) . & historical . (. black. ) . Factors Affecting Population Growth. Populations grow and shrink in response to abiotic and biotic factors.. Abiotic. – physical & chemical factors such as water & light availability, soil structure, salinity, pH, etc.. CLN4U – Mr. MacDonald. Nature vs Nurture. Theories of criminology generally fall into one of two categories. Biological Theories. Criminal are “born”. Sociological Theories. Criminals are “made”. Week 4 NJ Kang, Creativity. What is that creative individuals do?. Sensing creative problems. . Sensing problems or difficulties. Making guesses or hypotheses about the problems. Evaluating the hypotheses, and possibly revising them. Gholipour A. 2006. Organizational Behavior. University of Tehran.. Content vs. Process Motivation Theories. Content theories. explain why people have different needs at different times.. Implications of Content Theories: . Overpopulation: Proponents and Critics . Malthus Basics. Idea: late 1700’s. During this time (before the industrial revolution) he predicted that the growing population would eclipse the available food supply. . 1: Psychoanalytical Theories. Psychosexual. . psychosocial. 2: JEAN PIAGET AND COGNITIVE. STAGES OF DEVELOPMENT . 3: Interpersonal Theories. Harry Sullivan . HILDEGARD PEPLAU. 4: Humanistic Theories. Global pop Growth Rate: Sample 1. Worldwide, there were 20 births and 8 deaths per 1,000 in 2009. Calculate the growth rate of the . world . in 2009.. Global pop Growth Rate: Sample 1. Population growth rate – . 2) What are some things he mentions that can slow human population growth?. 3) How does increasing child survivability decrease population growth?. A . city experiences 12 deaths for each thousand people. What is the death rate (as a percentage and per thousand. Exponential Growth. (J-shaped curve). Logistic Growth. (S-shaped curve). Population ecology. Population ecology is the study of populations.. Population . = group of individuals of the same species occupying a common geographical area. Dewayne E Perry. ARiSE. , ECE, UT Austin. perry@ece.utexas.edu. Theories D & E. I begin with two simple theories:. A theory about design – D. A theory about empirical evaluation – E. And a theory about how to model theories. Most . populations . live together in clumps or patches.. Populations can grow, shrink, or remain stable. Population Dynamics. Age Structure. – proportions of individuals at various ages. Population Density. Month. Rainfall (mm). Dry . s. eason vegetation . t. ype = . l. ong grass & open woodland. Wet . s. eason vegetation . t. ype = short grass plains (productivity, nutrients). Synchronized birth pulse, .