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In 1864, the first barbiturate (barbituric acid) was synthesized.
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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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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
![On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major](https://biology-forums.com/gallery/47/medium_33_09_09_11_10_11_47_16972494.jpeg)
![School-age children are often independent and industrious, with a developing sense of self-confidenc](https://biology-forums.com/gallery/47/medium_2137_17_05_12_2_33_15.jpeg)