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Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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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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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Wolf spider perched and ready to attack Wolf spider perched and ready to attack
Compared to a chimpanzee, the human newborn has relatively little room to spare as it passes through Compared to a chimpanzee, the human newborn has relatively little room to spare as it passes through
Elusive ship Elusive ship
Infants often rely on a caregiver as a secure base when they meet a new person. Infants often rely on a caregiver as a secure base when they meet a new person.
Changes in bronchioles during an asthma attack Changes in bronchioles during an asthma attack
If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ... If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ...
Video: Sister chromatids of a metaphase chromosome animation

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