رَائِدَ طِفْلَ رَقِيقُ المَشاعِرِ، عَطُوفٌ عَلَى كُلِّ مَنْ حَوْلَهُ مِنْ إِنْسَانِ وحيوان ونبات، يفكر كثيرًا فيما يجري حوله في بيئته من ظواهر طبيعية وعلمية، ولا يخجل من كثرة استفساراته فيطلب من...
This text is 128 pages, including a map of the world's most important resources. It includes seven parts; the first of which deals with the volume of water, explaining that it is constant and never...
Offering children the opportunity to put what they have learned into action, this book not only describes how our most precious resource--water--is being misused, resulting in acid rain and water...