How Much of the Total Mass of the Universe Is

question 2

Multiple Choice

How much of the total mass of the universe is made up of hot dark matter?

• A) less than 1 percent
• B) 5 percent
• C) 25 percent
• D) 45 percent
• E) 90 percent

Understand the role of REM sleep and its implications on health and sleep quality.

Recognize the historical and psychological significance of dreams and the theorists associated with dream analysis.

Identify and classify psychoactive drugs based on their effects on mood, perception, and mental functioning.

Understand the implications of alcohol and other psychoactive substance use on social behavior and health.