Everythingthatisaliveneedsenergy.Allanimalsgettheenergy...
问题详情：Everythingthatisaliveneedsenergy.Allanimalsgettheenergytheyneedfromfood.Peopleareanimals.Thinkaboutthehumanbodyasan 61 (amaze)machine.Itcandoallkindsofthingsforus.Foodisthefuel 62 he...