The answer is the endogenous opiate.
The human body naturally produces its own opiates like substances and uses them as neurotransmitters. These substances include endorphins, enkephalins, and dynorphin, often collectively known as endogenous opioids. Endogenous opioids modulate our reactions to painful stimuli.
Answer:
angel number histamine can act as a ligand for some g-protein-coupled predictor
Mercury, due to it's low gravity it would not be able to hold a very strong atmosphere.
It's an sight observation you're using your eyes to see it it's one of your 5th sences
