Structure Formation in Our Universe

question 22

Multiple Choice

Structure formation in our universe

• A) proceeds from the top down.
• B) proceeds from the bottom and moves up.
• C) begins on all spatial scales at the same time.
• D) begins after clusters form.

---

Definitions:

Sexual Drive

The basic biological and psychological urge or desire for sexual activity or expression.

Emotional Responses

The emotional reactions or feelings stimulated by an event, situation, or stimulus.

Ivan Pavlov

A Russian physiologist best known for his work in classical conditioning, demonstrating the learning process now known as Pavlovian conditioning.

Conditioned Responses

Learned reactions or behaviors in response to specific conditioned stimuli that have been associated with an unconditioned stimulus.