26 Jun bio homework questions done
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Question 11 ptsBacteria and fungi that feed on wastes and decomposing organisms in an ecosystem are examples of ______.Bacteria and fungi that feed on wastes and decomposing organisms in an ecosystem are examples of ______.tertiary consumersproducerssecondary consumersdetritivores/ decomposersprimary consumersQuestion 21 ptsImportant abiotic factors in ecosystems include which of the following?Important abiotic factors in ecosystems include which of the following?windwaterAll of these options are correct.sunlighttemperatureQuestion 31 ptsSkip to question text.You sampled trees in two communities, the first one was the riparian area in the Aroyo Seco and you found:• 4 Alder Trees• 1 sycamore Tree• 6 Cottonwood trees• 1 Oak tree• 9 Willow treesYou then sampled the trees community in the chaparral on the west bank of the Arroyo Seco and you found:• 14 Oak trees• 2 Sycamore trees• 1 Eucalyptus tree• 1 Laurel Sumac• 2 Elderberry• 1 Date palmFor this information diversity isgreater in the riparian area, due to higher richness and abundancegreater in the chaparral area, due to having more oak treesgreater in the chaparral area, due to greater richnessgreater in the riparian area, due to lesser abundancegreater in the chaparral area, due to greater richness and abundanceQuestion 41 ptsIf humans exceed carrying capacity, which some argue we already have, what is the most likely scenario?If humans exceed carrying capacity, which some argue we already have, what is the most likely scenario?population growth will stop automaticallymodern medicine will be needed to prevent disease from spreadingthe environment will be degraded and actually lower the carrying capacity of the planetnothing will happen, carrying capacity only applies to wild animalsQuestion 51 ptsIntroduced species can have important effects on biological communities by ______.Introduced species can have important effects on biological communities by ______.All of these options are correct.competing with native species for resourcesdisplacing native speciespreying upon native speciescompeting with native species for foodQuestion 61 ptsWhat is the biggest factor that has allowed the human population to grow exponentially?What is the biggest factor that has allowed the human population to grow exponentially?lots of people having children later in lifeNone of these options are correct.movement of people into citiesfarming, industrialized agriculturebetter educationQuestion 71 ptsPopulations of two coexisting species both feed only on small rodents. What relationship may exist between these two organisms?Populations of two coexisting species both feed only on small rodents. What relationship may exist between these two organisms?predationparasitismcompetitionmutualismcommensalismQuestion 81 ptsThe small white insects (cochineal) that live in the Arroyo Seco, mostly on top of the Beaver Tail cactus and sucks sap and water from the cactus, without providing anything for the cactus in return, is an example of ______.The small white insects (cochineal) that live in the Arroyo Seco, mostly on top of the Beaver Tail cactus and sucks sap and water from the cactus, without providing anything for the cactus in return, is an example of ______.mutualismcompetitioncommensalismparasitismpredationQuestion 91 ptsWhat might explain why introduced annual (live for only 1 year) grasses like foxtails have an increased popoulation in the first years after the fire?What might explain why introduced annual (live for only 1 year) grasses like foxtails have an increased popoulation in the first years after the fire?These plants produce a high amount of seeds and quickly immigrate into an areaThese plants require fire to reproduceThis scenario is unlikely, foxtails are rarely found in the United States.These plants are mutualistic, they help each other colonize the landQuestion 101 ptsSkip to question text.The human population as seen in this picture of the USA at night follows what type of distribution? randomaggregateevenly distributeduniform
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