Stephen Crane was both a novelist and a C. reporter, although he left that other job and became a full time writer.
Answer: Your brain constantly gets signals from your body which detect the amount of oxygen and carbon dioxide in your blood. Your brain will send signals to the muscles involved in breathing and adjust your breathing rate depending on how active you are.
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By the time the bubbles rose to the surface of the ocean, the bubble model proposes that simple organic molecules had formed inside. The bubbles burst upon reaching the surface, releasing those molecules into the air.