Which terms refer to major subsystems of earth's physical systems? choose all answers that are correct. question options: lithosphere biosphere ionosphere hydrosphere

Answers:


  [A]:  lithosphere (more commonly—and relatively more recently— known as the "geosphere" ) ; 
           to avoid confusion with the other definition of the  "lithosphere" —                      however, in this context, this answer is correct).

  [B]:  "biosphere" .

  [C]:  "hydrosphere" .


Note:  The remaining one that is not among the answer choices given is the:  "atmosphere" .

Of course, there are other "separate subsystems" that are not among the "4 MAJOR realms; such as ionosphere, heliosphere, cryosphere.

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