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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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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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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Traditional animal phylogeny based on body plans. Traditional animal phylogeny based on body plans.
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Jamal plans to retire in 17 years. He is saving $2000 every start of the month in a retirement ... Jamal plans to retire in 17 years. He is saving $2000 every start of the month in a retirement ...
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