It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Everyone has one nostril that is larger than the other.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.
The central dogma of genetics at the molecular level.
Male Reproductive System
Female Reproductive System - Fallopian tubes "قناة فالوب الجهاز ...