Organized systems of agriculture, the maintenance of herds of domesticated animals, and permanent, year-round settlements marked the. a. Paleolithic Era c. Bronze Age b. Stone Age d. Neolithic Era Please select the best answer from the choices provided A B C D

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.