« previous next »

Author Question: A deepening of the voice in boys usually occurs a. before the start of the growth spurt. b. at ... (Read 93 times)

danielfitts88

  • Hero Member
  • *****
  • Posts: 535
on: Jun 22, 2018
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
Reply #1 on: Jun 22, 2018
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
« previous next »
 

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Radial pattern of shoot growth in plants Radial pattern of shoot growth in plants
Boys Climbing Rocks And Diving, Tomb Of Hunting And Fishing Boys Climbing Rocks And Diving, Tomb Of Hunting And Fishing
Soils support plant growth through ion exchange Soils support plant growth through ion exchange
Growth Chart Growth Chart
Human Population Growth Human Population Growth
Bacterial growth methods Bacterial growth methods
Video: Bone processes - resorption and deposition, remodeling and response to stress in adult bones

For a complete list of videos, visit our video library