Both bacteria and viruses are often able to mutate quickly to adapt to environmental changes. Humans, however, do not show a high rate of mutation. Certain types of bacteria and viruses are disease agents in humans. Explain how the differences in rates of mutation between
humans and disease causing bacteria and viruses may hinder modern medical treatment of these disease.

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.