Question

How many spheres are there on earth? Which are they?​

Answer 1

Answer:

Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).

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Answer 2

Answer: There are 4 major subsystems: land, water, living things, and air. These four subsystems are called spheres. They are called Lithosphere (land), Hydrosphere (water), Biosphere (living things), and Atmosphere (air).