How is the orientation of Earth's magnetism recorded in rocks on the ocean
floor?
A. Rocks align themselves to Earth's gravitational field.
B. A rock changes its magnetic orientation when the pole reverses.
O C. Earth's magnetic orientation is locked into the rock when the rock
cools.
D. All rocks have the same magnetic orientation.

C

Explanation:

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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.