The Age at Which Puberty Arrives Dropped Quickly Throughout the 20th

question 48

Multiple Choice

The age at which puberty arrives dropped quickly throughout the 20th century. What is the likely cause for this change?

• A) greenhouse effects on climate
• B) improved health and nutrition
• C) less manual labor requirements for adolescents
• D) amounts of radiation from electric appliances

---

Definitions:

Anxiety

A feeling of worry, nervousness, or unease typically about an imminent event or something with an uncertain outcome.

Posttraumatic Stress Disorder

Posttraumatic Stress Disorder is a mental health condition triggered by a terrifying event, causing severe anxiety, flashbacks, and uncontrollable thoughts about the event.

Generalized Anxiety Disorder

A mental health disorder characterized by excessive and persistent worry about various aspects of life, not tied to any specific threat.

Nightmares

Disturbing dreams that cause the dreamer to feel a range of unsettling emotions, such as anxiety or fear, upon waking.