Human Biology

(Sean Pound) #1

http://www.ck12.org Chapter 1. Human Biology


FIGURE 1.139
These teens are good friends. Like most
teens, they spend more time with one an-
other than they do with family members.
These teens are volunteering at a charity
event. What do you enjoy doing with your
friends?

Summary



  • A child becomes sexually mature during puberty.

  • Adolescence includes the physical changes of puberty among other changes.


Practice


Use the resource below to answer the questions that follow.



MEDIA
Click image to the left for more content.


  1. What is puberty? Are the first changes of puberty visible? What are they?

  2. What is the average age that girls start puberty? What is one reason puberty can occur earlier for some girls?

  3. What is the average age that boys start puberty? What kinds of non-physical changes may they experience?


Review



  1. What changes occur during puberty?

  2. Along with physical changes, what else changes during adolescence?

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