Biology

What is most of the oxygen that enters the human body taken in through?

More Questions from Biology
With what process do living creatures make more of themselves?
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Which of the following correctly names the top layer of the rain forest?
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What are all the living and non-living things in one area called?
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Which of the following is not a risk factor for high blood pressure?
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Which of these brain structures is part of the limbic system?
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What arctic sea whale has one long horn on its head?
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What is a name for the place where an animal lives?
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What are the first organisms to return to an area devastated by a major disaster?
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