Aku Ingin Tahu Sains 20 Air & Hidrosfer (Indonesian Edition)

Synopsis: “Water is one of the energy sources for the life of living creatures. Water is also a part of living creature’s ecosystem Hydrosphere is a water blanket which exists on earth. Then what are the parts of hydrosphere? What is the benefit of knowing it?” (http://www.gramediainternational.com/book/detail/9786020004495)