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Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

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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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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

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Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Smallest Fish in the world Smallest Fish in the world
At breakfast, a middle-class husband sits absorbed in the newspaper and the public affairs of the da At breakfast, a middle-class husband sits absorbed in the newspaper and the public affairs of the da
If you get a chance, look through popular read-aloud books for young children, such as The Very ... If you get a chance, look through popular read-aloud books for young children, such as The Very ...
World Distribution of Temperature World Distribution of Temperature
Paleogene world Paleogene world
Deserts on the world map Deserts on the world map
Video: Double Stranded DNA Molecule Animation

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