Biology
In which fluid-filled cavity do organs develop in organisms such as earthworms?
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Historically, which pathogen or disease has killed the most people?
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What carries the code for making proteins from the nucleus to the cytoplasm?
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What group of animals has hollow bodies and stinging cells?
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What cells carry messages from all parts of the body to the brain?
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What is the name of the animal group that includes mites, ticks and scorpions?
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What substance, found in food, helps move wastes through the body?
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What is an automatic response that doesn't involve the brain called?
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