Answer:
Carbon, Oxygen, Hydrogen And Nitrogen - Have In Common? They All Have The Same Number Of Valence Electrons. They All Have Unpaired Electrons In Their Valence Shells. They Are Elements Produced Only In Living Cells.
Digestion starts in the mouth when you're chewing, then the stomach, then small intestines.
I think that the answer is family
mitochondria and the Golgi apparatus i hope that's helps