The observations above support which of the following conclusions? F. When Layer 4 formed, the mountain was near a large lake.
G. When Layer 4 formed, whales, sharks, and sand dollars lived in the mountains.
H. When Layer 4 formed, an ocean covered the area where the fossils were found.
I. When Layer 4 formed, whales, sharks, lizards, toads, and rodents were in the
same food web.

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.