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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Cyanide works by making the human body unable to use oxygen.