Howdidzebrasgettheirstripes?It’shardtogetablack-and-whi...
問題詳情:Howdidzebrasgettheirstripes?It’shardtogetablack-and-whiteanswer.Somescientistssaythestripesareaformofcamouflage(僞裝),___61___ protectszebrasfromhungrylions.Otherssaythey’rekeytozebras’ma...