James will be catcher this year for his baseball team. What special precautions should James take to prevent injury to his reproductive system? Give details to explain your answer.

The body system that makes it possible to create offspring is the...........

What are some social changes that occur during adolescence?

Where in the male reproductive system are sperm made?

Name two developments that may take place during early adulthood.

The....... is a body system containing glands that regulate growth and other important activities.

Define fertilization?

The time when you start developing physical characteristics of adults of your gender is.........

Read the passage and then answer the question.

Gregor Mendel was born in 1822 in what is now the Czech Republic. He developed an interest in gardening on his father's farm. As a young man, Mendel studied to become a priest. His teachers noticed his great interest in nature, especially plants. They urged him to become a teacher himself. In 1854, he earned a degree from the University of Vienna and became a teacher. In his spare time, Mendel continued to garden. One day, he noticed differences in pea plants in his garden. Some appeared shriveled, but others did not. Mendel wondered about this. As a result, he tested 28,000 different plants. His experiments led him to identify laws of heredity. Today, Mendel is still considered to be the father of this science.

Which best sums up the main idea of the passage?

A. Most scientific breakthroughs happen by accident.

B. Gregor Mendel's love of gardening led him to discover the laws of heredity.

C. Gregor Mendel was a better teacher than a priest.

D. Gregor Mendel was a better scientist than a teacher.

Name two physical changes that occur during puberty.

How many chromosomes are there in most cells of the human body? What is the one exception?

Explain the importance of practicing healthful behaviors during adolescence.

Write a paragraph persuading teens to use good communication skills to help cope with mood swings.

Why do you think the teen years are not a good time for becoming a parent?