Which Object Is NOT an Abundant Physical Component of the Interstellar

question 3

Multiple Choice

Which object is NOT an abundant physical component of the interstellar medium?

• A) atoms and ions
• B) molecules
• C) dust
• D) radioactive elements

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Definitions:

ACh

Short for Acetylcholine, a neurotransmitter in both the central and peripheral nervous systems that plays key roles in the function of muscles, learning, and memory.

Pituitary Gland

A small endocrine gland in the brain involved in regulating vital body functions and general wellbeing, through the secretion of hormones.

Growth Spurt

A rapid period of growth, typically occurring during puberty, in which the body experiences significant physical changes.

Somatic Nervous System

The part of the peripheral nervous system associated with voluntary movement of body muscles as well as the reception of external stimuli.