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Author Question: Once a sperm and egg have fused into a single fertilized cell, it is called a(n) __________. (Read 23 times) |
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.