Author Question: A deepening of the voice in boys usually occurs a. before the start of the growth spurt. b. at ... (Read 87 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?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

For a complete list of videos, visit our video library