What Determines Sex

Different sexes possess distinct physiological characteristics. But what determines sex, and at what point is it decided? Humans are composed of an enormous number of cells (in the trillions). In





What Happens If You Ignore Cavities

Teeth are among the hardest structures in the human body, yet even such resilient tissue can be corroded and damaged, leading to cavities. Why does this happen, and what occurs if cavities are left


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