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6683378542you are visiting a developing country compared to a developed country you would expect to findhigher percentage of the population under age 150
6683395546which of the following applies to positive feedback loops?compound interest and amplifies systems1
6683413210which of the following can not be concluded from the law of conservation of matterwe will eventually run out of matter if we keep consuming it2
6683421115which of the following is an ex of low quality energyheat in the ocean3
6683431498which of the following statements does not apply to the second law of energyenergy can neither be created nor destroyed4
6683444294ecology is the study of howorganisms interact with eachother and their nonliving environment5
6683456825all of the following are major causes of differences among aquatic ecosystems exceptprecipitation6
6683459740autotrophscan live without heterotrophs7
6683475949organisms that complete the final breakdown and make nutrients available to plants from the remains or wastes of all organisms are calleddecomposers8
6683479944net primary productivityis the energy available to the rest of the food web9
6683489443which of the following ecosystems has the highest average net primary productivityswamps and marshes10
6683495655nitrogen fixation is accomplished bybacteria11
6683500708the form of nitrogen most usable to plants isnitrates12
6683510262ammonium ions are converted to nitrite ions and nitrate ions through the process ofnitrification13
6683519769which of the following factors causes the greatest ecological impact in a developed countryaverage resource use14
6683524475the matter and energy laws tell us that we can recyclematter but not energy15
6683531158estimates of the number of species existing on earth range from10 to 15 million16
6683545001all of the following increase the amount of carbon dioxide in the atmosphere exceptphotosynthesis17
6683551808all of the following are sources of phosphorous exceptacid rain18
6683557691an ecological niche includes all of the following exceptthe specific location where a species19
6683571187the correct order of most to least precipitation isforest grassland desert20
6683579991a change in the genetic composition of a population over successive generations is calledevolution21
6683588940name the biome that is located near the coast with a dense layer of shrubs adapted to frequent fireschaparral22
6683621692based on the theory of island biogeography by eo wilson you would predict that large islands near the mainland would have relativelyhigh immigration and low extinction rates23
6683647007choose the statements that do not describe a temperate deciduous forestshave nutrient poor soil24
6683659943lakes such as lake tahoe that have few minerals and low productivity are reffered to asoligotrophic25
6683667900what does species richness refer tothe number of different species26
6683675827which of the following statements is falseinterspecific competition is competition between two members of the same species27
6683721271a relationship in which one species benefits while the other is neither helped nor harmed to any significant degree is best labelledcommensalism28
6683735794of the following relationships the one most likely to be described as a positive feedback loop ismutualism29
6683745221which of the following statements about primary succession is trueit is initiated by pioneer species, it often involves species changing the environment so that they can no longer thrive and must be replaced by other species, it generally results in more complex more self-sustaining stages than the preceding ones30
6683786032which of the following connections among population cycle survival strategies and survivorship curves would you most expect to seeboom and bust r strategist early loss31
6683812462which of the following is not affected by deforestationozone layer hole32
6683821289the least amount of energy is available to which trophic leveltertiary consumers33
6683841597which of the following is an effective way to preserve the interrelationships of species in a sustainable mannera single large biosphere reserve34
6683850382which of the following is true of captive breeding programexpensive and many reproductive technologies are available to assist animal scientists35
6683869065which of the following is true of old growth forestsundisturbed for 100 years or more36
6683882456the advantages of clear cutting includemax profits, land can be reforested w fast growing trees, equipment and fuels costs are min, reduce the opportunity for invasive species or other human activities in the forest37
6683903429what are the consequences of crown firesdecrease water quality and decrease of wildlife habitat38
6683914572which of the following is true of the ecosystem approach of maintaining biodiversitycreation of preserves such as national parks through government action39
6683926272what are the immediate causes of extinctionhabitat loss invasive species pollution and overhasrvesting40
6687699754choose the statement that is false regarding habitat islandsmany small islands increase the biodiversity compared to a single large island41
6687704134total energy output is ______ total energy outputalways equal to42
6687708061the max population size that a given environmental can sustain is thecarrying capacity43
6687720006which of the following are solutions to the tragedy of the commonsgovernment regulations, international treaties, private property44
6687766452which system is controlled by a negative feedback loopmining aluminum when recycling is commonly used, a thermostat, population density of wolves in a healthy ecosystem, costs of goods due to supply and demand45
6687803780what challenges would a country undergoing rapid population decline expect to experiencelarger draw on the social security system, increase use of medical services, greater percent of population who are elderly46
6687807140women tend to have fewer and healthier children whenlive in societies in which their rights are protected, have access to education, have access to high paying jobs, have access to birth control47
6687928119which of the following is an intrinsic value of intact ecosystemsbiophilia48
6687941361which animal has been the beneficiary of the species approach to maintaining biodiversitygiant panda49
6687948082what are best defined as substances that cause birth defectsteratogens50
6687951936the worldwide drop in sperm counts among men has been attributed toendocrine disruptors51
6687954522properties of toxicants ild up in animals through bioaccumilation arepersistent, fat soluble52
6687964275acid rain is primarily the result of humans altering the ____ cyclesulfur53
6687966884the first national park wasyellowstone54
6687979032when deforestation occurs a positive externality that is lost but not accounted for in the market price isthe clean water the forest provides55
6687987821according to the IPAT model technology that enhances our acquisition of minererals fossil fuels timber and ocean fishincrease environmental impact56
6688004953if the growth rate of a population is 2% how long will it take for the population to double35 years57
6688053993which group of organisms is the most important in terms of contributing the most species to the global biodiversityinsects58
6688063416secondary successionoccurs after a flood or fire59
6688066647which of the following is a pioneer specieslichens60
6688075683when organisms come in contact but dont mate due to physiological or behavioral barriers it is calledreproductive isolations61
6688083296liver disease that develops due to long time use of alcohol and drugs would be an example of achronic effect62
6688083297ecologists have been studying populations in tropical regions to determine the effects of ddt on aquatic systems. which population would you expect to show the most effectspredatory birds like pelicans63
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6688085107which statements best illustrates limitations to determining the toxicities of environmental chemicalshumans are not exposed to just one chemical, they are exposed to a mixture of chemicals that may produce synergistic effects65
6688085109controlled burns would be used in foreststhat are subject to severe wildfires to reduce fuel load66
6688087933which of the following does not describe the impact of forests on the water cycleincrease total water availability67
6688087934the ultimate goal of forest management using fire which includestrees of various size and age classes distributed evenly or clumped68
6688087935the logging practice ____ removes snags after a natural disturbance such as a fire or insect damagesalvage logging69
6688087936what best explains the reason near and far islands of similar size have the same extinction ratethey have the same number of resources available once organisms arrive70
6688087937the theory of island biogeography as seen on the graphs describes which of the following ecological principlesthere is a given number of species or equilibrium that habitat islands can support71
6688092372characteristics that would lead to a nonnative organisms becoming invasive in a new environment would include which of the following characteristicshigh reproductive rate, generalists72
6688291368which of the following nonpoint pollution types is most likely to cause cultural eutrophication in lake ecosystemsfertilizers from ag fields73
6688296531restricts the international trade of threatened organismsCITES 197574
6688303793allows presidents to set aside land without an act of congressantiquities act of 190675
6688309831a group of individuals of the same species occupying a given area at the same timepopulation76
6688318999a community of living organisms interacting with one another and the physical and chemical factors of their nonliving environmentecosystem77
6688323500organisms that are reproductively isolated from eachotherspecies78
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6688340238early successional speciesr selected81
6688340239most vulnerable to extinctionK selected82
6688340240late reproductive maturityK selected83
6688343517control groupgroup without salt84
6688343518control factorpaper towels85
6688343519experimental factoramount of salt86
6688343520biomagnifies in food web banned due to decline in fish eating bird populationsDDT87
6688343521endocrine disruptor found in plasticsbisphenol A88
6688346663neurotoxins released in burning of coalmercury89
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6688348842the agent is a protozoa of the genus plasmodiummalaria93
6688348843a solutions to this disease includes the reduction of poverty so communities can afford clean drinking watercholera94
6688348844this disease is subject to antibiotic resistance that results from poverty or lack of educationtuberculosis95
6688353622the vector is human mucus and salivaflu96

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