By Measuring the Star Formation Rate in Galaxies as a Function

question 91

Multiple Choice

By measuring the star formation rate in galaxies as a function of their redshift, we have learned that the average star formation rate in galaxies peaked approximately ________ years ago.

• A) 1 billion
• B) 3 billion
• C) 5 billion
• D) 7 billion
• E) 11 billion

---

Definitions:

Persistent Mental Illness

Long-term mental health conditions that affect a person's thinking, feeling, mood, and behavior, requiring ongoing management.

Adult Attention Deficit Hyperactivity Disorder (ADHD)

A neurodevelopmental disorder affecting adults, characterized by inattention, hyperactivity, and impulsivity.

Inattention

Lack of focus or concentration on tasks or the environment, often leading to mistakes or incomplete work.

Trichotillomania

A mental disorder characterized by an irresistible urge to pull out one's hair, leading to hair loss and significant distress.