1. Which is NOT a characteristic of animals a) heterotrophic
b) contain eukaryotic cells
c) contain cell walls
d) mobility

2. All of the following are characteristics of mammals except mammals are not ___.
a) endothermic
b)exothermic
c)vertebrates
d)heterotrophs

C is the correct answer

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.