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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.
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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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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).
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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
Typical glycoprotein
Typical Caffeine Content of Chocolate and Several Beverages
A typical office file room. (Paper medical records are rapidly being replaced by electronic ...
A typical hacksaw that is used to cut metal. If cutting sheet metal or thin objects, then use a ...
A typical aboveground oil storage tank.
Typical bacterial size and structure