Geography4Kids.com
网站标题：	Rader&*39;s GEOGRAPHY 4 KIDS.COM - Earth Science Basics for Everyone!
网站简介：	Geography4Kids.com! The web site that teaches physical geography and earth science basics to everyone!
关键字：	geography4kids  chem4kids  geography  earth  science  energy  oxygen  cycle  earth  structure  atmosphere  biosphere  hydrosphere  lithosphere  food  chain  climate  science  elementary  weather  earth  p

 

idn.ceos.org
网站标题：	International Directory Network (IDN)
网站简介：	The Global Change Master Directory is a comprehensive directory of information about Earth science data, including the oceans, atmosphere, hydrosphere, solid earth, biosphere and human dimensions of global change. FGDC Clearinghouse Node (NASA).
关键字：	agricultrue  atmosphere  biosphere  cryosphere  snow  ice  climate  indicators  human  dimensions  hydrosphere  land  surface  ocean  paleoclimate  radiance  imagery  sun  solid  earth  data  global  warm

 

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