what is hepatitis b??????
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A serious liver infection caused by the hepatitis B virus that's easily preventable by a vaccine.This disease is most commonly spread by exposure to infected bodily fluids.
Symptoms are variable and include yellowing of the eyes, abdominal pain and dark urine. Some people, particularly children, don't experience any symptoms. In chronic cases, liver failure, cancer or scarring can occur.
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Newton's law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them.
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