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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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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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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

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The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

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Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

The four ways in which animals exchange heat with the environment are radiation, evaporation, convec The four ways in which animals exchange heat with the environment are radiation, evaporation, convec
Visualization of heat exchange in an ectotherm and an endotherm. Visualization of heat exchange in an ectotherm and an endotherm.
The approval of a new drug is a four-stage process: (1) preclinical investigation, (2) clinical inve The approval of a new drug is a four-stage process: (1) preclinical investigation, (2) clinical inve
Cross functional Process Flow Diagram Cross functional Process Flow Diagram
The process of learning to read involves physical and socioemotional development, changes in the ... The process of learning to read involves physical and socioemotional development, changes in the ...
(b) Scanning electron microscopy showing a phagocytic cell in the process of phagocytizing bacteria. ... (b) Scanning electron microscopy showing a phagocytic cell in the process of phagocytizing bacteria. ...
Video: Baroreceptor Reflex

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