Which best describes a person's carbon footprint?

Hello, Crispy12monte.

A carbon footprint is the total amount of CO2 emitted by fossil fuels that someone consumes. Hope this helps!!

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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.