A. chemoautotrophic bacteria : sulfur compounds b. chemoautotrophic bacteria: organic material
c. heterotrophic bacteria: organic material
d. photosynthetic bacteria: ammonia
23. Clostridium botulinum : botulism.
a. E. coli : diphtheria
b. E. coli: Salmonella
Staphylococcus aureus : Salmonela
d. Corynebacterium diphtheriae diphtheria

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.

Control variable- changedependant variable- stays the samechanging- food itemsdependant- presences of proteins