CharacteristicsoftheU.S.populationin2025TheUnitedStatesisthethirdmostpopulatedcountry intheworld.Thiscountryholdsabout4.5%oftheworld'spopulation.TheU.S.populationis currentlyestimatedtohave3087millionpersonsThisnumberismorethandoubleofthe populationfrom1950.Besidesthefactofthepopulationhasdoubleditssize,thepopulationhasalso becomequalitativelydifferentfromtheonefrom1950.AsnotedbythePopulationReference Bureau,"TheU.S.isgettingbigger,older,andmorediverse."Thegrowthofthepopulationisthe resultofthetrendsovertimeintherelationshipofincreasedbirths,decreaseddeaths,andincreased netimmigrationshowmorecontent
Population,byAgeGroup:1950–2050
Besidesthetotalsizeofthepopulation,oneofthemostsignificantdemographiccharacteristicsofa populationistheageandsexstructure.Theimmigrationhashadamajorinfluenceonboththesize andtheagestructureoftheU.S.population.TheU.S.populationhasexperiencedremarkable growthsince1950.Thenumberofwomenslightlyoutnumberedthemen.U.S.Population,bySex, 1950–2050,inMillions
Ingeneral,countriesexperiencinghighfertilityandrapidpopulationgrowth,havea"young" populationstructureandtheimportantpolicyconsiderationsareifthereareenoughschoolsand, sufficientjobsandhousingtoaccommodatethispopulation.Countrieswith"old"population structuresfacetheproblemsofstructuringanddevelopingretirementandhealthsystemstoserve thisolderpopulationandalsotheyhaveaconsiderablereductionthenumberoftheworkingforce Thedeclineoftheworkforceisoneofthemostdramaticeconomictendenciesofthepastfour decadesintheUnitedStates.Theindividual'sdecisionofwhethertostayintheworkforceorto retireisbasedonthecollaborationofanumberoffactorsincludingthefollowing:eligibilityfor SocialSecuritybenefits,availabilityofandbenefitsunderanemployer–financedpensionplan,work
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PopulationGrowth
PopulationGrowthisbecomingahugeissueinourcountryandworldtoday.Thereasonthatithas becomesuchapressingissueisthatourgrowingpopulationneedsagrowingeconomyandhas growingneedsAsourpopulationgrows,theneedsofthepopulationbecomebiggerVerylarge populationbecomesaproblemwhenthereisn'tenoughspacetolive,andnotenoughfoodand suppliestoliveoffof.Wecanpredictpopulationsizeinthefuturebyexaminingtherecentpast. Thiscangiveusgoodideasaboutwhatwewillhavetodotoaccommodateallofthepeopleinthe USandtheworld,orstarttoputrestrictionsonbabiesbeingbornlikeourfellowcountryChina.In thisactivityweweregiventhe
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Theerrorsinthelinearmodelwererandom,butnotoffbymucheachdifferentyear.Thepopulation wasn'toffbymorethan2,000peopleatmostinoneyear.Usingthelinearmodelwemadesome predictionslikewhatwillthepopulationbeingtheyear2000?Byputtingtheequationintothe calculatorandgoingintothetable,wepredictedthatintheyear2000thepopulationwouldbe2.76 billion.AnotherpredictionthatwasmadewaswhatwillthepopulationbewhenIretire.Most peopleretirewhentheyareaboutsixty–five,sothatwouldbeintheyear2045.Thepopulationin 2045ispredictedtobe3.8billionaccordingtothelinearmodel.Thepopulationwilldoublefrom thecurrentpopulationintheyear2114Thepopulationwillthenbe552billionOnethingthatIam concernedaboutishowhighthepopulationwillbewhenmychildrenaregrowingup.Iplantohave childrenwhenIamabout27sowhenmychildisabout20,theyearwillbe2027andthepopulation willbe34billionNextwedidthesameprocedurefortheworldpopulationInthiscase,the exponentialmodelfitthedatamoreefficiently.Theequationwas2,552,666,405=1.018,677,273^x, r=.998328246.Theworldpopulationfortheyear2000iswillbe6.44billion.Uponretiringthe worldpopulationwillbe1.5trillionpeople.Comparingthetwomodelstheexponentialmodel makessensebecausethepopulationisgrowingatsucharapidrate.The
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PopulationGrowth
Overtime,humanpopulationhasincreasedandunfortunatelyhascausedalotofproblemstothe economyaswellastotheenvironment.Manyoftheissuesthatpopulationgrowthhasaffectedare climatechanges,consumptionandwaste,familyplanning,poverty,foodandhunger,andchangesto theeconomyAccordingtodataresearchedbytheUnitedNations,"theworldpopulationwillreach 8billionto10billionbytheyear2030"(Livi–Bacci:1992:31–32citedinRobbins,2010:130).Eight totenbillionisalotofpeoplelivingintheworld,whichunfortunatelymightcausemoreproblems thansolutionstotheseissuesThebookwrittenbyauthorRichardHRobbins,GlobalProblemsand theCultureofCapitalism,includesan...showmorecontent...
(Malthus1798citedinRobbins,2010:132).Thisviewwasknownasthe"Malthusiantrap" (Mshahara,2017).Everythingisrelatedtooneanother,andifonethingchanges,thenusuallythe otherthingswilltoo.AsRobbinsexpressedthatMalthus'viewwasseeninEurope,thedemandfor fooddecreased,thepopulationdecreased,mortalitydecreased,andthenrightafter,arisein populationoccurred(Robbins,2010:157).Anotherissuethathascausedtheenvironmenttochange isdeforestation.Thelandgetsclearedforagriculturepurposes,toprovideroomforgrowingcrops, grazinglivestockandurbanuses.AsexplainedbyRobbins,agriculturistswouldclearafewacresof landbycuttingdownthetreesandburningtheminaprocessknownas"slashandburn"(Robbins, 2010:157)Asindividualscansee,populationgrowthhasdonesomenegativechangestotheearth Anotherresultthathasoccurredfrompopulationgrowthisachangeinconsumptionandwaste.This subjecthasargumentsonpopulationgrowthhinderingeconomicdevelopmentaswellasnot affectingitatallAsarguedbyRobbins,(Robbins2010:133–134)populationgrowthhascauseda highdemandforresources,suchaswater,food,andfuel.Withpopulationgrowing,thatiswhy somecommunitiesaredealingwithfamine,povertyandanincreaseinmortalityrates.Accordingto MassimiLivi–Bacci,(Livi–Bacci,1992:145citedinRobbins,2010:134)populationgrowthhasnot hadaneffectontheeconomy.
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