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Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
There are more sensory neurons in the tongue than in any other part of the body.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
![The respiratory system. (a) Sagittal section of the head and neck, revealing the organs of the upper](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_23_09_100491445.jpeg)
![Creede, Colorado, circa 1890, a rough silver mining town that grew from 660 people in 1889 to over 1](https://biology-forums.com/gallery/47/medium_376063_22_08_15_11_31_04_223802300.jpeg)