Which of these is an advantage of a multicellular organism? a. one cell performs all the necessary functions b. their size allows them to retain structure easily c. they can reproduce quickly t d. they can perform more functions

I'd say the correct answer your looking for is B.

the way that the mass of carbon can be conserved through cellular respiration is through a process/law called the law of conservation of mass which even tho it undergoes a process, mass is not be destroyed or changed

i think that it is c, d, and e, hope this