In 2014 AD

question 256

Multiple Choice

In 2014 A.D., an inhabitant of a planet orbiting a distant star observes the flash of the first nuclear explosion on Earth, which occurred in July 1945. Approximately how far away is his solar system from Earth?

• A) 219 pc
• B) 21.2 pc
• C) about 0.07 pc
• D) 2.06 pc

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Definitions:

Tricyclic Drugs

A class of antidepressant drugs used to treat various mood disorders, characterized by their chemical structure and mechanism of action.

Antidepressant Drugs

Medications prescribed to alleviate symptoms of depression by adjusting the chemical imbalances in the brain.

Synapses

Junctions between nerve cells where neural impulses are transmitted from one neuron to another.

Mood

A temporary state of emotion or feeling that differs from a person's usual affective condition.