cell respiration

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cell respiration

the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining processes and discarding, as waste products, carbon dioxide and water. Organisms that do not depend on oxygen degrade foodstuffs in a process called fermentation.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Cell respiration is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
a stew of meat, vegetables, potatoes, etc.
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