How do different kinds of cells develop in an embryo

Stem cells can develop into many different cell types in the body. They act as a repair system and refill other cells as long as you are alive. When these cells divide they can stay as they are or become another cell with a more specialised function, like a muscle cell or a red blood cell.

answer; the terminally ill;

my hamster died and my second hamster i got after that one died as well. i also lost two birds named rainbow and kiwi, (they didn't die, they flew off and escaped). i lost a cat named omi, and a dog named snoopie. the best way i got over it is, paying my respects, and just thinking that they were in a happy place. as well as just remembering but not thinking about it all the time, just do fun activities and try not to think about it too much. hope you feel better. i'm sorry about your loss. : (