In the Past, CFCs Were Not Used in

question 33

Multiple Choice

In the past, CFCs were not used in .

• A) dry cleaning
• B) spray cans
• C) plastic manufacturing
• D) refrigerators
• E) air conditioners

---

Definitions:

Estes

Pertains to the work of William K. Estes, an American psychologist known for his research in mathematical psychology, learning theory, and memory processes.

Thorndike

Edward Thorndike was an American psychologist whose work on animal behavior and the learning process led to the theory of connectionism and helped lay the scientific foundation for modern educational psychology.

Fear of Heights

Also known as acrophobia, it is an anxiety disorder characterized by an extreme fear of high places.

Ladder

A piece of equipment consisting of a series of bars or steps between two upright lengths of wood, metal, or rope, used for climbing up or down.