Question 1
Data have shown that girls in the United States and other economically developed countries have been experiencing menarche at __________ in past centuries.
◦ earlier ages than
◦ about the same ages as
◦ later ages than
◦ more variable ages than
Question 2
During their growth spurt, boys tend to add more __________ than girls.
◦ muscle
◦ fat on their bellies
◦ fat on their legs
◦ muscle in their arms but not their legs