If you are implying one these choices not needed for survival it would be parents only when you can survive on your own (I'm not that sure but I hope this helped the slightest but)
Answer:
Human Activitys.
Explanation
The goods we use, travel around the world very quickly, and they often carry uninvited species with them.
The hair would be curly because if h is recessive and H is just curly, that hair is gonna stay the same.
Chromatids......then chromosome !!!
