Bacterial transformation is a major concern in many medical settings. why might health care providers be concerned?
pathogenic bacteria could introduce disease-causing genes in non-pathogenic bacteria.
antibiotic resistance genes could be introduced to new bacteria to create "superbugs."
bacteriophages could spread dna encoding toxins to new bacteria.
all of the above.

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.