________ identity relates to that part of adolescents' self-concept that is derived from their awareness and knowledge that they are members of a distinct social group

In 1970, about ______ percent of newborns in China were low birthweight; now it is estimated that ______ percent are born low birthweight

15; 50 50; 50 15; 55 50; 15

Adult cognition is closely tied to chronological age

Indicate whether this statement is true or false.