How does a trait become more common in a population over time

Of good nutrition because it is essential to all forms of metabolism in the body

Which safe and legal options do teen parents have if they think they are not ready to be parents? check all that apply. leave the baby in front of someone's door. surrender the baby under their state’s safe-haven laws. place the baby for adoption. release custody to the baby’s grandparents. give the baby to a stranger.

The structure shared between the male reproductive system is the