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Did you know?
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.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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.