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.

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust. 

Since wxyz is 4, halfof that would be 2.