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.
Active transport, which occurs at the expense of energy.
C there your answer i hope it help
It is A, the cell is divided into a parent cell and daughter cell (mitosis)
Passive because the water flow gets weaker mark brainliest please and have a good day
