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Strange facts ( 2003-12-03 10:50) (Shenzhen Daily) A quarter* has 119 grooves* on its edge; a dime* has one less groove! A hummingbird’s* nest is not much bigger than a ping-pong ball and it weighs only 0.1 ounce (3.1 grams). It’s hard to imagine how light they actually are! Babies are born with 300 bones, but adults only have 206! Human teeth are almost as hard as rocks! The average person has more than 1,460 dreams a year! Human thigh* bones are stronger than concrete*! Camels have three eyelids* to protect themselves from blowing sand. A crocodile always grows new teeth to replace the old teeth. The sentence “The quick brown fox jumps over a lazy dog.” uses every letter of the alphabet. The electric chair was invented by a dentist. The most used letter in the English alphabet is “e,” and “q” is the least used! The average iceberg weighs 20 million tons! The placement of a donkey’s eyes in its head enables it to see all four feet at all times! A mole* can dig a tunnel of 300 feet (90 meters) long in just one night! Apples are more efficient than caffeine* in keeping people awake in the mornings! Nose prints are used to identify dogs, just like humans use fingerprints! A hardworking adult sweats* up to four gallons (18 liters) per day. Most of the sweat evaporates before a person realizes it’s there, though! The poison-arrow frogs* are known by their bright colors which warn other animals that they are poisonous. Its poison is one of the most powerful known and can cause paralysis* or death. It is so dangerous that one millionth of an ounce can kill a dog and an amount smaller than a grain of salt can kill a human. One frog carries enough poison to kill about 100 people.
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