Each of the following is a main idea of the cell theory excepta. all organisms are composed of cellsb. the cell is the basic unit of organization of organismc. all cells are similar in structure and functiond. all cells come from preexisting cell

The answer would be:

C: all cells are similar in structure and function

Even though this answer is correct in content, this was not mentioned in the main idea of cell theory.

Hope this helps c:

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.

Nerves are problay the number 1 thing in the body