The Edwards Plateau is notes for containing many caves that were partly formed by geographic activity million of years ago. What else could have been contributed to the formation of these caves systems and aquifers?

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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.