Which of these infectious, viral diseases affects the immune system and can cause major damage to organs such as the liver and brain?

a) aids

b) syphilis

c) diabetes

d) parkinson's 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.

It forms into a full nebula/star