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Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
![Exponential growth in the Canadian migratory population of the whooping crane after 70 years of cons](https://biology-forums.com/gallery/47/medium_33_02_08_11_12_29_58_13812024.jpeg)
![Model of a sequential study in which two cohorts were followed beginning at age 20. One cohort was f](https://biology-forums.com/gallery/47/medium_6_31_05_15_8_20_42_21974458.jpeg)