No, most places require you to be at least 21 to be considered to adopt someone.
First of all at 20 they are no longer a minor. They became an adult at 18. So, you don't adopt an adult.
yes but only if the 16 year old was emancipated.
NO
No, an 18 year old is an adult.
No.
yes
not unless your emancipated.
yes
Yes, if she is emancipated.
if you are 19 there is no need to be emancipated you are already a legal adult
After 18 you can get emancipated in Puerto Rico.
No he can not.