Secretion of which hormone is not controlled by a negative feedback mechanism

It is controlled by the negative feedback loop shown in Figure below. Here's how thyroid regulation works. The hypothalamus secretes thyrotropin-releasing hormone, or TRH. TRH stimulates the pituitary gland to produce thyroid-stimulating hormone, or TSH.

by uncle google

the answer is a a teenager needs more sleep than the adult no matter what

it's false.

"every person has their limitations which prevent us from accomplishing something. some are better than mathematics for example and some are worse. those people who are worse might never be able to become mathematicians, but that does not mean that they would not be great at doing something else."