About What Percent of Earth's Surface Is Covered with Water

question 113

Multiple Choice

About what percent of Earth's surface is covered with water?

• A) 70%
• B) 10%
• C) 50%
• D) 30%

---

Definitions:

Conditioned Response

A learned response to a previously neutral stimulus that has been repeatedly presented along with a stimulus that naturally evokes a response.

Unconditioned Response

A natural, automatic reaction to a stimulus that occurs without any need for prior learning or conditioning.

Conditioned Stimulus

A stimulus that, through association with an unconditioned stimulus, comes to elicit a conditioned response in classical conditioning.

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers a response without prior learning.