The four main spheres of earth are the cryosphere, hydrosphere, biosphere, and atmosphere atmosphere, hydrosphere, anthrosphere, and atmosphere astrosphere, hydrosphere, lithosphere, and biosphere atmosphere, hydrosphere, lithosphere, and biosphere

These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air). Each of these four spheres can be further divided into sub-spheres.

Explanation:

1."lessen the worth of ."

2."increase the worth of."

3." beyond the worth of."

4."against the worth of ."

a and b because with the other three, they simplify to something else.