Unconformities occur when: A: eroded surfaces are covered by younger rock
B: younger rock is placed on top of older rock
C: igneous structures cut across layered rock
D: an entire sedimentary bed is deposited at the same time

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.

Yes yes yes very good