The Solar System Is About How Many Years Old

question 29

Multiple Choice

The solar system is about how many years old?

• A)about 12 billion
• B)about 4.6 billion
• C)750 million
• D)400 million
• E)200 million

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Definitions:

Reticular Activating

Part of the reticular formation in the brainstem that plays a crucial role in controlling arousal and consciousness.

Medulla Oblongata

The lower portion of the brainstem, responsible for regulating vital functions like heartbeat, breathing, and blood pressure.

Anticholinergic Side Effects

Side effects resulting from the blockade of acetylcholine receptors, including dry mouth, blurred vision, constipation, and urinary retention.

Imipramine

A tricyclic antidepressant medication used to treat depression and certain anxiety disorders by increasing the activity of certain chemicals in the brain.