|
Author Question: What is the specific gravity of a solution? A) The ratio of the concentration of a solute to the ... (Read 45 times) |
According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Vaccines prevent between 2.5 and 4 million deaths every year.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.