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Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

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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Blood is approximately twice as thick as water because of the cells and other components found in it.

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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

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

Body plan of an arthropod, as represented by a grasshopper Body plan of an arthropod, as represented by a grasshopper
Plan of the Temple of Hera I, Poseidonia (Roman Paestum) Plan of the Temple of Hera I, Poseidonia (Roman Paestum)
Plan of the Parthenon Plan of the Parthenon
Plan of Trajan's Forum and Market "خطة منتدى ترجان والسوق" Plan of Trajan's Forum and Market "خطة منتدى ترجان والسوق"
Soybean plants in nitrogen-poor soil show how root nodules affect growth. Only the darker green plan Soybean plants in nitrogen-poor soil show how root nodules affect growth. Only the darker green plan
Acoelomate body plan of a flatworm Acoelomate body plan of a flatworm
Video: Oxygen - hemoglobin dissociation curve & Hemoglobin's affinity with oxygen - acidity

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