Text by Gidget JimenezIllustrations by Isabel Roxas If 70 percent of the world is made up of water, why is everyone worrying about it running out? Discover the properties of water, along with its cycle, treatment, distribution, and how you can help conserve it. Find out whether we can drink the ocean.Kung ang 70% ng mundo ay tubig, bakit nag-aalala ang lahat tungkol sa pagkaubos nito? Alamin ang mga katangian ng tubig, at kung paano ito umiikot, nililinis, at dini-distribute, pati na rin kung paano ka makatutulong sa pagtitipid nito. Alamin kung maaari nating inumin ang dagat.ISBN: 9789715083065Published: 2007Language: EnglishAge Recommendation: 10+40 pages | 160 grams | 7.25 by 10.25 inches