In an animal behavior experiment, 50 tagged white pigeons and 200 tagged gray pi

游客2025-02-27 10

问题 In an animal behavior experiment, 50 tagged white pigeons and 200 tagged gray pigeons were released from a laboratory. Within one week, 88 percent of the white pigeons and 80.5 percent of the gray pigeons had returned to the laboratory. What percent of the total number of pigeons returned to the laboratory?

选项 A、80.5
B、82
C、82.5
D、85
E、86.5

答案 B

解析 88% of 50 is 44, and 80.5% of 200 is 161.44+161=205. 205/250 total pigeons=0.82=82%.

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In an animal behavior experiment, 50 tagged white pigeons and 200 tagged gray pi

Inananimalbehaviorexperiment,50taggedwhitepigeonsand200taggedgraypi

Homeostasis,ananimal’smaintenanceofcertaininternalvariableswithinan

Theprimarypurposeofthepassageisto______[br]Inresponsetoexperimental

Asapromotionalexperiment,OmegaCompanydistributedfourmillioncatalogs.In

Inthe1960’s,long-termstudiesofprimatebehavioroftenusedassubjectstama

Lastyear,supportforthesocialandbehavioralsciencesrepresentedonlyabout

Whycanhumanbeingsoutlastmanyfasterfourleggedanimalswhenrunninglongd

WhenthePinecrestAnimalShelter,acharitableorganization,wasindangerofc

Oneofthegreatdifficultiesinestablishinganimalrightsbasedmerelyonthe

ResearchersatCornellUniversityhavedemonstratedthathomingpigeonscansens

[originaltext] ItwasabadnightforLewis.Hisresearchintheneighboringt

TheWorldBankfiguresshowsharppriceincreasesinwheat,maize,sugar,an

()售后服务部()广告策划部[br]()生产部()技术质量部N，H

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