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Thyroid conditions may make getting pregnant impossible.

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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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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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Women are 50% to 75% more likely than men to experience an adverse drug reaction.

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