Author Question: In developed countries, the average age at the onset of menarche is A. 12.2 years B. 13.2 years ... (Read 46 times)

saliriagwu

  • Hero Member
  • *****
  • Posts: 537
In developed countries, the average age at the onset of menarche is
 
  A. 12.2 years
  B. 13.2 years
  C. 14.2 years
  D. 15.2 years

Question 2

According to the Fels longitudinal growth study, what is the average age (rounded to nearest whole year) at which American boys and girls reach peak height velocity?
 
  A. 11, boys; 10, girls
  B. 12, boys; 11, girls
  C. 13, boys; 13, girls
  D. 14, boys; 12, girls



macagn

  • Sr. Member
  • ****
  • Posts: 345
Answer to Question 1

B

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

For a complete list of videos, visit our video library