Author Question: A deepening of the voice in boys usually occurs a. before the start of the growth spurt. b. at ... (Read 89 times)

danielfitts88

  • Hero Member
  • *****
  • Posts: 535
A deepening of the voice in boys usually occurs
 
  a. before the start of the growth spurt.
  b. at about the midpoint of the growth spurt.
  c. at age 19.
  d. at the same time in all boys.

Question 2

There is no secular trend for earlier puberty
 
  a. for boys in developed nations.
  b. in the last century (since 1900) for boys or girls in developed nations.
  c. in the last half century for boys or girls in developed nations.
  d. among girls in developing nations.



gstein359

  • Sr. Member
  • ****
  • Posts: 293
Answer to Question 1

Answer: b. at about the midpoint of the growth spurt.

Answer to Question 2

Answer: c. in the last half century for boys or girls in developed nations.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

For a complete list of videos, visit our video library