It Is 39 Trillion Miles to the Nearest Star Beyond

question 45

Multiple Choice

It is 39 trillion miles to the nearest star beyond the sun. Expressed in powers of ten, this is

• A) 3.9 × 10¹⁰.
• B) 3.9 × 10⁹.
• C) 3.9 × 10¹³.
• D) 3.9 × 10¹².

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Definitions:

Facial Features

Facial features include the distinct parts of a person's face, such as eyes, nose, mouth, which can be key to identifying individuals and expressing emotions.

Distinctive Facial

Features or characteristics of the face that are unique or particularly noticeable, which can sometimes be linked to specific genetic or cultural backgrounds.

Limbic System

A complex system of nerves and networks in the brain, involved in emotions and drives, such as fear, pleasure, and survival instincts.

Regulates Hunger

The function of specific hormones, like ghrelin and leptin, and brain mechanisms that control the sensation of hunger and signal the need to consume food.