UnitFourZoologyWhatcanyoudo?’sreadTheDomesticationofAnimalsThedomesticationofwildspeciesleddirectlytodenserhumanpopulationsbyyieldingmorefoodthanthehunter-,livestockhelpedtofeedmorepeoplebyprovidingmeat,milkandfertilizer,’mainsourceofanimalprotein,replacingwildgame,andtheyalsofurnishedwool,leather,,with“large”definedasthoseweighingover100pounds(45kilograms).Fourteensuchspeciesweredomesticatedbeforethetwentiethcentury,,goats,pigs,horses,,geese,rabbits,dogs,cats,mink,bees,,clothing,,noneofthempulledplowsorwagons,nonecarriedriders,,,000
【高级英语】unit4-zoology-student-version 来自淘豆网www.taodocs.com转载请标明出处.