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It's time to rethink reference with this revolutionary encyclopedia! DK, the best reference publisher, meets Google the world's best search engine. Look up the subject of interest in the book, then when directed go online to discover a wealth of further information and key facts plus suggestions for further reading. Nine thematic sections in the encyclopedia including space, earth, history and human body with coverage of over 600 subjects and links to over 1, 000 vetted sites plus sound buttons, virtual tours and live footage online. There's no need to be stuck with homework ever again.EXOSPHERE ATMOSPHERE LAYERS protects us from meteorites and warms the Eartha#39;s surface. ... .OZONE LAYER Situated450-900km(280-560miles)above the Eartha#39;s surface, the exosphere WHAT IS ATMOSPHERIC ... THERMOSPHERE DOES THE ATMOSPHERE REMAIN THE SAME FROM EARTH TO SPACE?

Publisher:Dorling Kindersley Ltd - 2003-10-01


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