Question

What are the four Speares of earth . define ​

Answer 1

Answer:

These layers are the troposphere, stratosphere, mesosphere and thermosphere

Answer 2

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).