Alllivingthingsontheearthneedotherlivingthingstolive...
問題詳情: Alllivingthingsontheearthneedotherlivingthingstolive.Nothinglivesalone.Mostanimalsmustliveinagroup,andevenaplantgrowsclosetogetherwithothersofthesamekind.Sometimesonelivingthingkillsanot...