Which Statement Correctly Describes the Role of Gravity in Galaxy

question 53

Multiple Choice

Which statement correctly describes the role of gravity in galaxy formation?

• A)Gravity makes the dense regions denser.
• B)Gravity slows down photons so they collect into galaxies.
• C)Gravity makes the universe more uniform and smooth than it was at the beginning.
• D)Gravity makes galaxies spin.

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Definitions:

Popliteal

Referring to the area behind the knee where the popliteal artery and vein are located, involved in the circulation to the lower leg.

Descending Aorta

The portion of the aorta that extends downwards from the arch of the aorta, distributing oxygenated blood to the lower parts of the body.

Tunica Media

The middle, muscular layer of the walls of arteries and veins, responsible for regulating the diameter of the vessels.

Smooth Muscle

A type of muscle found in the walls of internal organs such as the intestines and blood vessels, responsible for involuntary movements.