Posted by A.W. on Wednesday, March 25, 2009 at 3:57pm.
A.W., We do not do your homework for you. After you have done some reading and writing, please repost and we will be happy to make further suggestions/corrections as needed.
GuruBlue, I know that the four subsystems are also called spheres; that they are the lithosphere, the biosphere, the atmosphere, and the hydrosphere. And with out them Earth and we as the people of Earth would not survive. Hows that?
Check this site.
http://geography.about.com/od/physicalgeography/a/fourspheres.htm
What is one thing that humans get from each of the spheres?
The spheres are the biosphere, atmosphere, hydrosphere, and lithosphere.
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