Which fossil fuel contributes 13 percent of the electricity in the United States? coal
oil
natural gas
methane

although no longer accurate today, the answer is most likely a.) coal.

Explanation:

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what is the aerea shown

explanation:

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.