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Name_____________________________________Per____________Date____________ TheEcologyReviewWorksheet 1. Ecologyisthe________ofthe______________oforganismswithoneanotherandwiththeir______________. 2. Fillinthelevelsoforganizationfromlargesttosmallestanddescribeeach. ___________________ ______________________ ______________________ a. ______________________ ______________________ Howisapopulationdifferentthanacommunity? 3. Nameatleast3bioticand3abioticfactorsintheecosystemtotheright (ignorethenumbersonthediagram). a. Biotic b. Abiotic 4. IntheCarbonCycle,Listatleast3waysCO2getsINTOofthe atmosphere: a. HowdoesCO2getOUToftheatmosphere? 5. Drawafoodchainbelow(showingtransferofenergy):indicatethesun,oneproducerandatleast3consumers. 6. ExplaintheNitrogenCycle(includenitrogenfixationanddenitrificationinyouranswer). 7. Whyisnitrogenimportant(*HINT:Whatdoweneeditfor)? 8. Whyarebacteriaimportanttous?Inwhichcycle(s)dowerelyonthem? 9. Populationgrowthrateisaffectedbythesefourcomponents. a. Whichincreasethegrowthrate?Whichdecrease? Name_____________________________________Per____________Date____________ 10. Nameanddescribethreefactorsthatlimitpopulationgrowth. 11. Onthegraph,whatwouldexplainwhythepopulationlevelsoff insteadofdecreasingdrastically? 12. Whatisthedifferencebetweenadensity-dependent(DD)ordensity-independent(DI)factor? 13. Identifythefollowingfactorsaseitherdensity-dependent(DD)ordensity-independent(DI)? a. Freezingweather____________ b. Avolcaniceruption____________ c. Predation____________ d. Floodsorfires____________ e. Diseaseorparasites____________ f. Tendstobebiotic____________ 14. Whatareinvasivespecies,andwhyaretheydisruptivetoanecosystem? 15. Asymbioticrelationshipinwhichoneorganismbenefitsandtheotherisharmediscalled_________________. 16. Asymbioticrelationshipwherebothorganism benefitiscalled_____________________. 17. Asymbioticrelationshipinwhich oneorganismbenefitsandtheotherisnot harmediscalled______________. 18. Accordingtotheecologicalpyramidtotheright, therearemanymore_______________thanthere areprimaryconsumers. 19. Organismsthateatthesecondaryandtertiary consumerswouldbe____________________. Name_____________________________________Per____________Date____________ 20. Whoaretheproducers: 21. Ratsare_____________________consumers. 22. Iftheproducersstartedwith6,000,000unitsofenergyhowmuchenergy wouldbegiventoeachlevel(Filloutthepyramidtotheright). 23. Howisenergylostasyoumoveuptrophiclevels? 24. Whatisthedifferencebetweenanenergypyramidandabiomass pyramid? 25. Ecologicalsuccessionrefersto_______________changesthatoccurtoa___________________overtime. 26. Howisprimarysuccessiondifferentfromsecondarysuccession? 27. Thefirstcolonizerstoappearduringecologicalsuccessionarereferredtoas________________________. a. Whyaretheyimportanttotheecosystem? 28. Determineiftherecoveryprocessforanenvironmentwillhappenbyprimarysuccessionorsecondarysuccession: a. Recedingglaciers: b. Logginginaforest: c. Majorflooding: d. Volcaniceruption: e. Forestfire: