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Answer:
There is a higher oxygen content in the air of the lungs than that of oxygen-depleted blood and a lower carbon dioxide concentration. This gradient of concentration causes gas exchange during respiration.
Explanation:
An object in an electrical circuit resists the flow of energy called a B. Resistor.
The name "resistor" implies that the resistor resists the flow of energy. We can calculate the amount of resistance across a resistor.
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