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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
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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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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Excessive alcohol use costs the country approximately $235 billion every year.
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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.