On Planet X,some Areas Receive Very Little Ultraviolet Radiation

question 9

Multiple Choice

On Planet X,some areas receive very little ultraviolet radiation.What skin color would you expect Planet X's people to have if they live in those areas?

• A)always light
• B)always dark
• C)light,unless their diet contains a lot of Vitamin D
• D)dark,unless their diet contains a lot of Vitamin D
• E)light,unless their diet contains a lot of Vitamin A

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Definitions:

Reticular Formation

A network of neurons in the brainstem involved in arousal and alertness.

Procedural Memories

Memories of how to perform tasks or actions, such as riding a bike or tying shoelaces, often recalled unconsciously.

Cerebellum

A region of the brain that plays an important role in motor control, and can also be involved in some cognitive functions like attention and language.

Stroke

A medical condition where poor blood flow to the brain results in cell death, causing various forms of physical and cognitive impairment.