Biology

What natural biological defense system protects the body from disease and fights off germs?

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What arctic sea whale has one long horn on its head?
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Which of these animals is closely related to a lobster?
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What vitamin refers to a family of related compounds called tocopherols?
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Which animal was mistaken for the source of the bubonic plague?
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What are all the living and non-living things in one area called?
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Which of these body parts takes in food?
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What part of a plant produces seeds?
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What are the parts of a living creature's system called?
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