|
|
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).
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
![Evolutionary ecologists live and do research in contemporary cultures that maintain all or some aspe](https://biology-forums.com/gallery/47/medium_273688_23_02_15_8_11_15_208812369.jpeg)
![To attain their goal of objectivity and accuracy in their research, sociologists must put away their ...](https://biology-forums.com/gallery/47/medium_632960_15_11_16_11_30_03_24096856.png)