Answer:
The answer number 2 collaborate
You'll most often hear A. 3,500, but no one knows where it comes from and may be faulty
9: major calyx
15: pyramid
17: papilla
Explanation:
Serotonin is the key hormone that stabilizes our mood, feelings of well-being, and happiness. This hormone impacts your entire body. It enables brain cells and other nervous system cells to communicate with each other. Serotonin also helps with sleeping, eating, and digestion.
Hope it helps!!!
