i think the 5th one, it pairs well with controls functions like breathing, which has led to a number of opioid-related deaths when disrupted.
A prolonged feeling of helplessness and hopelessness? depression
That would be the protein food group.
Answer:
The cells of multicellular organisms perform specialized tasks and communicate with one another in order to maintain homeostasis. Areas that hold that hold adjacent cells together and enable them to communicate.
Single-celled organisms maintain homeostasis using their cell membrane and other organelles.