What Is Desertification

question 36

Multiple Choice

What is desertification?

• A) when a desert changes to some other environment
• B) when a desert suffers increased erosion due to loss of plants
• C) when grasslands or some other ecology is converted into a desert
• D) the deposition of one layer of desert sand over another

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Definitions:

Activation Synthesis Model

A theory in neuroscience that proposes dreams result from the brain's attempt to make sense of random neural activity during REM sleep.

Dreaming

A series of thoughts, images, and sensations occurring in a person's mind during sleep.

Sleepwalking

A sleep disorder causing people to get up and walk around while in a state of sleep.

EEG

Short for electroencephalogram, a test that measures electrical activity in the brain and is used in the diagnosis of neurological conditions.