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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Did you know?
The horizontal fraction bar was introduced by the Arabs.