|
Author Question: Tin Pan Alley is a term referring to a. songs that were popular in the 1920s b. a street along ... (Read 39 times) |
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.