In 2009 the Average U

question 76

Multiple Choice

In 2009 the average U.S.adult spent ___ hour(s) a day on social networking sites and surfing the Internet.

• A)1
• B)4
• C)6
• D)9
• E)less than 1 In 2009,the average U.S.adult spent around six hours a day surfing social networking sites,almost three times as long as two years earlier.

---

Definitions:

Sternohyoid

A muscle in the neck that depresses the hyoid bone and larynx during swallowing and speaking.

Teres Major

A muscle of the upper arm that assists in rotating and adducting the arm, located near the shoulder.

Intercostal Muscles

Muscles located between the ribs that help in the process of respiration, aiding in the expansion and contraction of the chest cavity.

Mandible

The lower jawbone in vertebrates, forming the lower part of the skull.