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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

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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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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Photograph of a person with a cataract in the right eye. Photograph of a person with a cataract in the right eye.
How Much Food Does the World Produce Per Person? How Much Food Does the World Produce Per Person?
A) Butterfly-shaped lupus rash. Lupus is the Latin word for wolf; the face rash was thought to look ... A) Butterfly-shaped lupus rash. Lupus is the Latin word for wolf; the face rash was thought to look ...
A Breathalyzer is used to measure a person's blood alcohol concentration (BAC) A Breathalyzer is used to measure a person's blood alcohol concentration (BAC)
Identification of the numbers in the Word Problem Identification of the numbers in the Word Problem
Calculate the accumulated value of monthly payments of $100.00 made at the end of each month ... Calculate the accumulated value of monthly payments of $100.00 made at the end of each month ...
Video: Major Elements in Biological Molecules: Proteins

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