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- What are the two key concepts for this section? Listthree variables that affect the growth and decline ofhuman populations. How can we calculate the population change of an area? Define the total fertilityrate (TFR). How has the global TFR changed since1955? Summarize the story of population growth inthe United States. List six changes in lifestyles thathave taken place in the United States during the 20thcentury, leading to a rise in per capita resource use.S2) Below are two tables showing the population size and deaths by age for one year in the states of Louisiana (LA) and Florida (FL). Use the data to answer the following questions. You may use the blank cells in the tables for calculations and to show answers Age group 0-15 16-70 71+ Louisiana Deaths 30 215 585 Florida Age group Deaths 0-15 16-70 71+ 25 400 725 Population 165,000 300,000 75,000 Population 90,000 435,000 225,000 a. Calculate the overall crude mortality rates for LA and FL expressed as per 100,000 population. LA: FL: b. Calculate the age-adjusted mortality rates using the combined population as the standard. c. Explain what accounts for this difference in crude rates and adjusted rates between LA and FL.3 oBook References Classify each of the following descriptions by its effect on human population growth rates. Low death rate compared to birth rate First phase of demographic transition A population close to its carrying capacity Low birth rate Outbreak of deadly infectious diseases High mortality rate Second phase of demographic transition Current conditions in India Low population growth High population growth
- Visit the website of the Population Reference Bureau, www.prb.org (Links to an external site.). Find the most recent “World Population Data Sheet” under the Data section. Choose two nations to compare with respect to: birth rate, death rate, infant mortality rate, rate of population growth, and/or other data indicators of interest to you. What do these data tell you about the health of the populations of these countries?The life table below is for a species of lizard. Use it to answer the questions below. It can be copied and pasted in excel or downloaded here. What is the intrinsic rate of increase of this population? nx bx 678 1 102 31 3 19 10 4 14 12 5 12 12 6 10 14 7 10 10 8 8 11 9 7 10 1.89 0.053 O 1.32 0.51The data below represent a cohort of organism “X”, tracked from birth to death. Time period* Number alive at start of period Proportion surviving at start of time interval Deaths during period Rate of mortality during time period "0-1" 432 1.00 390 0.90 "1-2" 42 0.10 29 0.69 "2-3" 13 "3-4" 11 "4-5" 10 "5-6" 9 "6-7" 7 "7-8" 3 "8-9" 0 * Numbers are reported over eight equal sized time periods – these could represent days, weeks, months or years. a) Complete the table by recording survivorship (proportion alive at the start of the time period), the number of deaths and the mortality rate for each time period. For each column you need to ensure you indicate how you performed your calculation (e.g. show one example calculation or provide a formula). b) Plot a survivorship curve for species X using semi-log graph paper. A template sheet has been uploaded to the Problem Set 2 folder. Remember…
- The data below represent a cohort of organism “X”, tracked from birth to death. Time period* Number alive at start of period Proportion surviving at start of time interval Deaths during period Rate of mortality during time period "0-1" 432 1.00 390 0.90 "1-2" 42 0.10 29 0.69 "2-3" 13 "3-4" 11 "4-5" 10 "5-6" 9 "6-7" 7 "7-8" 3 "8-9" 0 * Numbers are reported over eight equal sized time periods – these could represent days, weeks, months or years. 1.Complete the table by recording survivorship (proportion alive at the start of the time period), the number of deaths and the mortality rate for each time period. For each column you need to ensure you indicate how you performed your calculation (e.g. show one example calculation or provide a formula). 2.Plot a survivorship curve for species X using semi-log graph paper.Remember that survivorship is, by convention, plotted as a proportion of…Visit the website of the Population Reference Bureau, www.prb.org (Links to an external site.). Find the most recent “World Population Data Sheet” under the Data section. Choose two nations to compare with respect to: birth rate, death rate, infant mortality rate, rate of population growth, and/or other data indicators of interest to you. What do these data tell you about the health of the populations of these countries? Add references you used and an accurate data sheetVisit the website of the Population Reference Bureau, www.prb.org (Links to an external site.). Find the most recent “World Population Data Sheet” under the Data section. Choose two nations to compare with respect to: birth rate, death rate, infant mortality rate, rate of population growth, and/or other data indicators of interest to you. What do these data tell you about the health of the populations of these countries? Add the sources you used
- The chart below shows selected population data for twodifferent countries, A and B. Study the chart and answerthe questions that follow Calculate the rates of natural increase (due to birthsand deaths, not counting immigration) for the populations of country A and country B. Based on thesecalculations and the data in the table, for each of thecountries, suggest whether it is a more-developedcountry or a less-developed country and explain thereasons for your answersWhat is shown in the graph? A) B) D) 40,000 Population exponential decay of a population exponential growth of a population arithmetic progression of a population an inverse relation between time and population Time 10 hrDuring a 24-month period of time, a population of 5 000 prairie dogs experienced 6 500 births and 5 560 deaths. Forty-two prairie dogs left the population and 85 prairie dogs joined the population. Show all work and explanation.a) The population change of prairie dogs is a. 6 585 b. 5 602 c. 983 d. 941 b)During the 24-month time period, the growth of the prairie dog population is a. 983 prairie dogs/year b. 492 prairie dogs/year c. 291.5 prairie dogs/year d. 41.0 prairie dogs/year c) Calculate the per capita growth rate of the prairie dog population AND the per capita growth rate per year of the prairie dog population. Show all work.