What Is the Relative Abundance of Mass in Stars,gas,and Dark

question 15

Multiple Choice

What is the relative abundance of mass in stars,gas,and dark matter within galaxy clusters?

• A) 10 percent stars, 1 percent gas, 89 percent dark matter
• B) 10 percent stars, 10 percent gas, 80 percent dark matter
• C) 1 percent stars, 1 percent gas, 98 percent dark matter
• D) 1 percent stars, 10 percent gas, 89 percent dark matter

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Definitions:

Extension

The movement by which the angle between two adjoining parts of the body is increased; opposite of flexion.

Hyperesthesia

An increased sensitivity to stimulation, particularly touch.

Summation Effect

The process where combined effects of multiple stimuli result in a greater response than the sum of their individual effects.

Analgesia

The absence of pain in response to stimulation which would normally be painful, often achieved through the use of medication.