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Biology
How many stages of sleep are there?
Biology
How many stages of sleep are there?
5
10
12
3
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What are the thin bones that protect your lungs and heart?
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Which of the following is the largest group directly under kingdoms?
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Which of these animals competes with a lion for food?
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What is the tube that carries food into the stomach called?
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What nutrient group is sugar in?
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Which of these plants would most likely be found around a pond's edge?
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Which habitat would a fresh water fish live in?
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Which of the following is not a risk factor for high blood pressure?
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