The patient has had mild joint pain for the past three years without any increase in severity. this means that her symptoms are

If there is a patient that has persistent pain, illness, or condition that has been present for a long period of time, consistently recurring again and again, or if it is difficult to get rid of. Then the patient has whats known as a chronic condition. - so her symptoms are "chronic".

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.

All of them are man made