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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
There are approximately 3 million unintended pregnancies in the United States each year.
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.
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).
![With the rocker arms contacting the base circle of the cam, insert a feeler gauge of the specified ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_4_38_07_297262197.png)
![Warming friction created with a sawing motion (i.e., ulnar friction). The ulnar sides of the hands ...](https://biology-forums.com/gallery/32/medium_380798_23_08_17_12_08_29_329942157.jpeg)