How many galaxies are estimated to be in the universe?

A. 10,000

B. 100 billion

C. 1

D. 100

B would be the closest thing to wht you are looking for.

the observable universe is estimated to contain 200 billion to two trillion galaxies.

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when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.