DESCRIPTION Mengapa terjadi pemanasan global? Mengapa bisa terjadi empat musim? Apakah inti es itu? Mengapa panas matahari di bumi tidak merata? Berada di daerah mana salju abadi itu?
With bright, cartoon-style illustrations and clear diagrams this sensitive, detailed and informative guide explains male puberty in a reassuring and friendly way. It tackles everything from physical and hormonal changes to emotional upheaval. Ideal for libraries and schools, the contents and index pages make key topics easy to find.
Provides information on the various systems and organs of the human body and the principles of a healty lifestyle, and recommends related Web sites.
What do your heart and lungs do, and where does your food go? Discover the answers and much more with inventive illustrations, photographs and simple, straightforward text.
You can count numbers all around you, from the eight legs on a spider to the one nose on your face. But can you count the stars in the sky? Explore Space from galaxies and stars to the planets in our solar system, including Earth and the Moon.