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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

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Medication errors are more common among seriously ill patients than with those with minor conditions.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Relationship between fruit radius and beak length in populations of native and introduced species of Relationship between fruit radius and beak length in populations of native and introduced species of
Feral Jackson's Chameleon from a population introduced to Hawaii in the 1970s Feral Jackson's Chameleon from a population introduced to Hawaii in the 1970s
Polytomies represent uncertainty about phylogenetic relationships Polytomies represent uncertainty about phylogenetic relationships
Redlichida, such as this Paradoxides, may represent the ancestral trilobites. Redlichida, such as this Paradoxides, may represent the ancestral trilobites.
(A) The name and shape of the adult teeth. These teeth represent those found in the right side of th (A) The name and shape of the adult teeth. These teeth represent those found in the right side of th
Some obesity genes in the human genome. The green triangles represent single genes in which obesity Some obesity genes in the human genome. The green triangles represent single genes in which obesity
Video: The Lac Operon in E. Coli

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