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Interpreting Graphs and Data: Amphibian DeclineUse this graph to answer the questions.Part A Interpreting the graphToday, entire populations of frogs, toads, and salamanders are vanishing without a trace. Recent studies implicate a wide array of factors.What is the second greatest cause of decline for threatened species?ANSWER:CorrectPart B Thinking criticallyWhich of these statements is supported by the graph? Select all that apply.ANSWER:drug traffickingecosystem servicesHMO servicesconservation geneticshabitat lossfirespollutiondisease
12/14/2016Chapter 814/31Incorrect; correct answer withheld by instructorAs scientists learn more about amphibian declines, they are responding with increased habitat protection, enhanced disease monitoring, and captive breedingprograms.Activity: Conservation Biology ReviewClick hereto complete this activity.Then answer the questions.Part AOne of the most severe consequences of habitat degradation is the _____ of a population.ANSWER:CorrectSevere habitat degradation fragments a larger population into more vulnerable smaller populations.Part BA sink habitat is where a subpopulation's death rate is _____.ANSWER:CorrectIn sink habitats, populations experience a net loss of individuals.Part CFertilizer runoff can result in _____ a lake.ANSWER:The declines of many amphibian species are unexplained.Habitat loss is the greatest known cause of amphibian decline.Amphibian declines from pollution have increased since the year 2000.Climate change is a major cause of amphibian decline.There are more nonthreatened amphibian species than threatened amphibian species.magnificationeutrophicationfragmentationfossilizationprecipitationequal to its reproductive rategreater than its reproductive rateless than its reproductive rateat its lowesteither equal to its reproductive rate or less than its reproductive rate
12/14/2016Chapter 815/31CorrectThe addition of fertilizer to a lake can cause an algal bloom. When the algae die, decomposition depletes the oxygen in the lake and this lack of oxygen kills theanimal life.Part DMost biodiversity hot spots are in the _____.ANSWER:CorrectThe tropics are home to many endangered endemic species.Part E_____ is the increase in pesticide concentration as the pesticides pass up a food chain.ANSWER:Correct"Biological magnification" refers to the accumulation of toxins as they are passed up the food chain.Activity: Exploring Island BiogeographyClick hereto complete this activity.Then answer the questions.