Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Your heart beats over 36 million times a year.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
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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.
These young adults look forward to a life together as they celebrate their wedding
Organization of traditional source records
The proportion of obese and extremely obese adults in the United States has increased over the past