If your control smear does not show gram-positive cocci and gram-negative rods, can you assume that the gram-stain reaction of your "test" organism is correct? why?

No. At that point, you need to determine if the problem lies in the control or the staining reagents or techniques.

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.