In 1864, the first barbiturate (barbituric acid) was synthesized.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
An overview of the four phases of food use in animals: ingestion, digestion, absorption, and elimina
Airplane Food
The movement of a bolus of food from the mouth to the stomach via the esophagus.
The normal food link between sea urchins and algae/ Corals