Asweallknow,treesareimportanttoourlife.Theyprovideuswit...
问题详情:Asweallknow,treesareimportanttoourlife.Theyprovideuswithfood,woodandmostimportantly,oxygen.Nowthereisonemorethingwecanaddtothislist—blockingoutharmfulbacteriainwater.Thediscoverywasmadebysome...