2、recognizea1innumber.Humanbeingsarebornwiththisability.2,experimentsshowthatmanyanimalsare,too.Forexample,manybirdshavegoodnumbersense.Ifanesthasfoureggsandyouremoveone,thebirdwillnot3.However,ifyouremovetwo,thebird4leaves.Thismeansthatthebirdknowsthe5betweentwoandthree. Another