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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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.
Blood is approximately twice as thick as water because of the cells and other components found in it.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.