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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
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.
Did you know?
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
Did you know?
The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
Did you know?
Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.