Biology
What substance in your ears helps keep germs and dirt out?
More Questions from Biology
What is made by white blood cells to help fight off infection?
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With what process do living creatures make more of themselves?
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What SPF should the sunscreen that you use be at the lowest?
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What are the first organisms to return to an area devastated by a major disaster?
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What forms the outer boundary of a cell and controls material moving in and out of the cell?
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What is the largest internal organ of the human body?
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