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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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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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People about to have surgery must tell their health care providers about all supplements they take.
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There are more nerve cells in one human brain than there are stars in the Milky Way.